@@ -1,6 +1,27 @@
1{-# LANGUAGE OverloadedStrings #-}
1{-# LANGUAGE OverloadedStrings #-}
2module Reporting.Exit
2module Reporting.Exit
3− ( Exit(..)
3+ ( Init(..), initToReport
4+ , Diff(..), diffToReport
5+ , Make(..), makeToReport
6+ , Bump(..), bumpToReport
7+ , Repl(..), replToReport
8+ , Publish(..), publishToReport
9+ , Install(..), installToReport
10+ , Reactor(..), reactorToReport
19+ , RegistryProblem(..)
21+ , BuildProjectProblem(..)
4 , toString
25 , toString
5 , toStderr
26 , toStderr
@@ -8,146 +29,2041 @@ module Reporting.Exit
11−import qualified Elm.Compiler as Compiler
32+import qualified Data.ByteString as BS
33+import qualified Data.ByteString.UTF8 as BS_UTF8
34+import qualified Data.List as List
35+import qualified Data.Map as Map
36+import qualified Data.Name as N
37+import qualified Data.NonEmptyList as NE
38+import qualified Network.HTTP.Client as HTTP
39+import qualified Network.HTTP.Types.Header as HTTP
40+import qualified Network.HTTP.Types.Status as HTTP
41+import qualified System.FilePath as FP
42+import System.FilePath ((</>), (<.>))
44+import qualified Elm.Constraint as C
12−import qualified Elm.Compiler.Module as Module
45+import qualified Elm.Magnitude as M
46+import qualified Elm.ModuleName as ModuleName
13import qualified Elm.Package as Pkg
47import qualified Elm.Package as Pkg
48+import qualified Elm.Version as V
51+import qualified Json.Decode as Decode
14import qualified Json.Encode as Encode
52import qualified Json.Encode as Encode
53+import qualified Json.String as Json
54+import Parse.Primitives (Row, Col)
55+import qualified Reporting.Annotation as A
56+import Reporting.Doc ((<>))
15import qualified Reporting.Doc as D
57import qualified Reporting.Doc as D
16−import qualified Reporting.Exit.Assets as Asset
58+import qualified Reporting.Error.Import as Import
17−import qualified Reporting.Exit.Bump as Bump
59+import qualified Reporting.Error.Json as Json
18−import qualified Reporting.Exit.Compile as Compile
19−import qualified Reporting.Exit.Crawl as Crawl
20−import qualified Reporting.Exit.Deps as Deps
21−import qualified Reporting.Exit.Diff as Diff
22import qualified Reporting.Exit.Help as Help
60import qualified Reporting.Exit.Help as Help
23−import qualified Reporting.Exit.Http as Http
61+import qualified Reporting.Error as Error
24−import qualified Reporting.Exit.Make as Make
62+import qualified Reporting.Render.Code as Code
25−import qualified Reporting.Exit.Publish as Publish
63+
29−-- ALL POSSIBLE ERRORS
69+toString :: Help.Report -> String
71+ Help.toString (Help.reportToDoc report)
36− | Compile Compile.Exit [Compile.Exit]
38− | Cycle [Module.Raw] -- TODO write docs to help with this scenario
42− | Publish Publish.Exit
43− | BadHttp String Http.Exit
45− -- misc
74+toStderr :: Help.Report -> IO ()
46− | NoSolution [Pkg.Name]
75+toStderr report =
76+ Help.toStderr (Help.reportToDoc report)
79+toJson :: Help.Report -> Encode.Value
81+ Help.reportToJson report
89+ = InitNoSolution [Pkg.Name]
90+ | InitNoOfflineSolution [Pkg.Name]
91+ | InitSolverProblem Solver
93+ | InitRegistryProblem RegistryProblem
96+initToReport :: Init -> Help.Report
99+ InitNoSolution pkgs ->
100+ Help.report "NO SOLUTION" Nothing
101+ "I tried to create an elm.json with the following direct dependencies:"
102+ [ D.indent 4 $ D.vcat $
103+ map (D.dullyellow . D.fromChars . Pkg.toChars) pkgs
105+ "I could not find compatible versions though! This should not happen, so please\
106+ \ ask around one of the community forums at https://elm-lang.org/community to learn\
107+ \ what is going on!"
110+ InitNoOfflineSolution pkgs ->
111+ Help.report "NO OFFLINE SOLUTION" Nothing
112+ "I tried to create an elm.json with the following direct dependencies:"
113+ [ D.indent 4 $ D.vcat $
114+ map (D.dullyellow . D.fromChars . Pkg.toChars) pkgs
116+ "I could not find compatible versions though, but that may be because I could not\
117+ \ connect to https://package.elm-lang.org to get the latest list of packages. Are\
118+ \ you able to connect to the internet? Please ask around one of the community\
119+ \ forums at https://elm-lang.org/community for help!"
122+ InitSolverProblem solver ->
123+ toSolverReport solver
125+ InitAlreadyExists ->
126+ Help.report "EXISTING PROJECT" Nothing
127+ "You already have an elm.json file, so there is nothing for me to initialize!"
129+ ["Maybe",D.green (D.fromChars (D.makeLink "init")),"can","help"
130+ ,"you","figure","out","what","to","do","next?"
134+ InitRegistryProblem problem ->
135+ toRegistryProblemReport "PROBLEM LOADING PACKAGE LIST" problem $
136+ "I need the list of published packages before I can start initializing projects"
145+ | DiffBadOutline Outline
149+ | DiffUnknownPackage Pkg.Name [Pkg.Name]
150+ | DiffUnknownVersion Pkg.Name V.Version [V.Version]
151+ | DiffDocsProblem V.Version DocsProblem
152+ | DiffMustHaveLatestRegistry RegistryProblem
153+ | DiffBadDetails Details
154+ | DiffBadBuild BuildProblem
157+diffToReport :: Diff -> Help.Report
161+ Help.report "DIFF WHAT?" Nothing
162+ "I cannot find an elm.json so I am not sure what you want me to diff.\
163+ \ Normally you run `elm diff` from within a project!"
164+ [ D.reflow $ "If you are just curious to see a diff, try running this command:"
165+ , D.indent 4 $ D.green $ "elm diff elm/http 1.0.0 2.0.0"
168+ DiffBadOutline outline ->
169+ toOutlineReport outline
172+ Help.report "CANNOT DIFF APPLICATIONS" (Just "elm.json")
173+ "Your elm.json says this project is an application, but `elm diff` only works\
174+ \ with packages. That way there are previously published versions of the API to\
176+ [ D.reflow $ "If you are just curious to see a diff, try running this command:"
177+ , D.indent 4 $ D.dullyellow $ "elm diff elm/json 1.0.0 1.1.2"
181+ Help.report "NO EXPOSED MODULES" (Just "elm.json")
182+ "Your elm.json has no \"exposed-modules\" which means there is no public API at\
183+ \ all right now! What am I supposed to diff?"
185+ "Try adding some modules back to the \"exposed-modules\" field."
189+ Help.report "UNPUBLISHED" Nothing
190+ "This package is not published yet. There is nothing to diff against!"
193+ DiffUnknownPackage pkg suggestions ->
194+ Help.report "UNKNOWN PACKAGE" Nothing
195+ ( "I cannot find a package called:"
197+ [ D.indent 4 $ D.red $ D.fromChars $ Pkg.toChars pkg
198+ , "Maybe you want one of these instead?"
199+ , D.indent 4 $ D.dullyellow $ D.vcat $ map (D.fromChars . Pkg.toChars) suggestions
200+ , "But check <https://package.elm-lang.org> to see all possibilities!"
203+ DiffUnknownVersion _pkg vsn realVersions ->
204+ Help.docReport "UNKNOWN VERSION" Nothing
206+ [ "Version", D.red (D.fromVersion vsn)
207+ , "has", "never", "been", "published,", "so", "I"
208+ , "cannot", "diff", "against", "it."
211+ [ "Here are all the versions that HAVE been published:"
212+ , D.indent 4 $ D.dullyellow $ D.vcat $
214+ sameMajor v1 v2 = V._major v1 == V._major v2
215+ mkRow vsns = D.hsep $ map D.fromVersion vsns
217+ map mkRow $ List.groupBy sameMajor (List.sort realVersions)
218+ , "Want one of those instead?"
221+ DiffDocsProblem version problem ->
222+ toDocsProblemReport problem $
223+ "I need the docs for " ++ V.toChars version ++ " to compute this diff"
225+ DiffMustHaveLatestRegistry problem ->
226+ toRegistryProblemReport "PROBLEM UPDATING PACKAGE LIST" problem $
227+ "I need the latest list of published packages before I do this diff"
229+ DiffBadDetails details ->
230+ toDetailsReport details
232+ DiffBadBuild buildProblem ->
233+ toBuildProblemReport buildProblem
242+ | BumpBadOutline Outline
244+ | BumpUnexpectedVersion V.Version [V.Version]
245+ | BumpMustHaveLatestRegistry RegistryProblem
246+ | BumpCannotFindDocs Pkg.Name V.Version DocsProblem
247+ | BumpBadDetails Details
249+ | BumpBadBuild BuildProblem
252+bumpToReport :: Bump -> Help.Report
256+ Help.report "BUMP WHAT?" Nothing
257+ "I cannot find an elm.json so I am not sure what you want me to bump."
259+ "Elm packages always have an elm.json that says current the version number. If\
260+ \ you run this command from a directory with an elm.json file, I will try to bump\
261+ \ the version in there based on the API changes."
264+ BumpBadOutline outline ->
265+ toOutlineReport outline
268+ Help.report "CANNOT BUMP APPLICATIONS" (Just "elm.json")
269+ "Your elm.json says this is an application. That means it cannot be published\
270+ \ on <https://package.elm-lang.org> and therefore has no version to bump!"
273+ BumpUnexpectedVersion vsn versions ->
274+ Help.docReport "CANNOT BUMP" (Just "elm.json")
276+ ["Your","elm.json","says","I","should","bump","relative","to","version"
277+ ,D.red (D.fromVersion vsn) <> ","
278+ ,"but","I","cannot","find","that","version","on","<https://package.elm-lang.org>."
279+ ,"That","means","there","is","no","API","for","me","to","diff","against","and"
280+ ,"figure","out","if","these","are","MAJOR,","MINOR,","or","PATCH","changes."
284+ ["Try","bumping","again","after","changing","the",D.dullyellow "\"version\"","in","elm.json"]
285+ ++ if length versions == 1 then ["to:"] else ["to","one","of","these:"]
286+ , D.vcat $ map (D.green . D.fromVersion) versions
289+ BumpMustHaveLatestRegistry problem ->
290+ toRegistryProblemReport "PROBLEM UPDATING PACKAGE LIST" problem $
291+ "I need the latest list of published packages before I can bump any versions"
293+ BumpCannotFindDocs _ version problem ->
294+ toDocsProblemReport problem $
295+ "I need the docs for " ++ V.toChars version ++ " to compute the next version number"
297+ BumpBadDetails details ->
298+ toDetailsReport details
301+ Help.docReport "NO EXPOSED MODULES" (Just "elm.json")
303+ [ "To", "bump", "a", "package,", "the"
304+ , D.dullyellow "\"exposed-modules\"", "field", "of", "your"
305+ , "elm.json", "must", "list", "at", "least", "one", "module."
309+ "Try adding some modules back to the \"exposed-modules\" field."
312+ BumpBadBuild problem ->
313+ toBuildProblemReport problem
317+-- OVERVIEW OF VERSIONING
320+newPackageOverview :: String
323+ [ "This package has never been published before. Here's how things work:"
325+ , " - Versions all have exactly three parts: MAJOR.MINOR.PATCH"
327+ , " - All packages start with initial version " ++ V.toChars V.one
329+ , " - Versions are incremented based on how the API changes:"
331+ , " PATCH = the API is the same, no risk of breaking code"
332+ , " MINOR = values have been added, existing values are unchanged"
333+ , " MAJOR = existing values have been changed or removed"
335+ , " - I will bump versions for you, automatically enforcing these rules"
346+ | PublishBadOutline Outline
347+ | PublishBadDetails Details
348+ | PublishMustHaveLatestRegistry RegistryProblem
349+ | PublishApplication
350+ | PublishNotInitialVersion V.Version
351+ | PublishAlreadyPublished V.Version
352+ | PublishInvalidBump V.Version V.Version
353+ | PublishBadBump V.Version V.Version M.Magnitude V.Version M.Magnitude
357+ | PublishShortReadme
359+ | PublishBuildProblem BuildProblem
360+ | PublishMissingTag V.Version
361+ | PublishCannotGetTag V.Version Http.Error
362+ | PublishCannotGetTagData V.Version String BS.ByteString
363+ | PublishCannotGetZip Http.Error
364+ | PublishCannotDecodeZip String
365+ | PublishCannotGetDocs V.Version V.Version DocsProblem
366+ | PublishCannotRegister Http.Error
368+ | PublishLocalChanges V.Version
370+ | PublishZipBadDetails Details
371+ | PublishZipApplication
372+ | PublishZipNoExposed
373+ | PublishZipBuildProblem BuildProblem
376+publishToReport :: Publish -> Help.Report
377+publishToReport publish =
380+ Help.report "PUBLISH WHAT?" Nothing
381+ "I cannot find an elm.json so I am not sure what you want me to publish."
383+ "Elm packages always have an elm.json that states the version number,\
384+ \ dependencies, exposed modules, etc."
387+ PublishBadOutline outline ->
388+ toOutlineReport outline
390+ PublishBadDetails problem ->
391+ toDetailsReport problem
393+ PublishMustHaveLatestRegistry problem ->
394+ toRegistryProblemReport "PROBLEM UPDATING PACKAGE LIST" problem $
395+ "I need the latest list of published packages to make sure this is safe to publish"
397+ PublishApplication ->
398+ Help.report "UNPUBLISHABLE" Nothing "I cannot publish applications, only packages!" []
400+ PublishNotInitialVersion vsn ->
401+ Help.docReport "INVALID VERSION" Nothing
403+ ["I","cannot","publish"
404+ ,D.red (D.fromVersion vsn)
405+ ,"as","the","initial","version."
409+ ["Change","it","to",D.green "1.0.0","which","is"
410+ ,"the","initial","version","for","all","Elm","packages."
414+ PublishAlreadyPublished vsn ->
415+ Help.docReport "ALREADY PUBLISHED" Nothing
418+ [ "Version", D.green (D.fromVersion vsn)
419+ , "has", "already", "been", "published.", "You", "cannot"
420+ , "publish", "it", "again!"
422+ , "Try using the `bump` command:"
425+ [ D.dullyellow $ D.indent 4 "elm bump"
427+ "It computes the version number based on API changes, ensuring\
428+ \ that no breaking changes end up in PATCH releases!"
431+ PublishInvalidBump statedVersion latestVersion ->
432+ Help.docReport "INVALID VERSION" (Just "elm.json")
434+ ["Your","elm.json","says","the","next","version","should","be"
435+ ,D.red (D.fromVersion statedVersion) <> ","
436+ ,"but","that","is","not","valid","based","on","the","previously"
437+ ,"published","versions."
441+ ["Change","the","version","back","to"
442+ ,D.green (D.fromVersion latestVersion)
443+ ,"which","is","the","most","recently","published","version."
444+ ,"From","there,","have","Elm","bump","the","version","by","running:"
446+ , D.indent 4 $ D.green "elm bump"
448+ "If you want more insight on the API changes Elm detects, you\
449+ \ can run `elm diff` at this point as well."
452+ PublishBadBump old new magnitude realNew realMagnitude ->
453+ Help.docReport "INVALID VERSION" (Just "elm.json")
456+ ["Your","elm.json","says","the","next","version","should","be"
457+ ,D.red (D.fromVersion new) <> ","
458+ ,"indicating","a",D.fromChars (M.toChars magnitude)
459+ ,"change","to","the","public","API."
460+ ,"This","does","not","match","the","API","diff","given","by:"
463+ [ D.indent 4 $ D.fromChars $
464+ "elm diff " ++ V.toChars old
467+ ["This","command","says","this","is","a"
468+ ,D.fromChars (M.toChars realMagnitude)
469+ ,"change,","so","the","next","version","should","be"
470+ ,D.green (D.fromVersion realNew) <> "."
471+ ,"Double","check","everything","to","make","sure","you"
472+ ,"are","publishing","what","you","want!"
475+ "Also, next time use `elm bump` and I'll figure all this out for you!"
479+ Help.docReport "NO SUMMARY" (Just "elm.json")
481+ [ "To", "publish", "a", "package,", "your", "elm.json", "must"
482+ , "have", "a", D.dullyellow "\"summary\"", "field", "that", "gives"
483+ , "a", "consice", "overview", "of", "your", "project."
487+ "The summary must be less than 80 characters. It should describe\
488+ \ the concrete use of your package as clearly and as plainly as possible."
492+ Help.docReport "NO EXPOSED MODULES" (Just "elm.json")
494+ [ "To", "publish", "a", "package,", "the"
495+ , D.dullyellow "\"exposed-modules\"", "field", "of", "your"
496+ , "elm.json", "must", "list", "at", "least", "one", "module."
500+ "Which modules do you want users of the package to have access to? Add their\
501+ \ names to the \"exposed-modules\" list."
505+ toBadReadmeReport "NO README" $
506+ "Every published package must have a helpful README.md\
507+ \ file, but I do not see one in your project."
509+ PublishShortReadme ->
510+ toBadReadmeReport "SHORT README" $
511+ "This README.md is too short. Having more details will help\
512+ \ people assess your package quickly and fairly."
515+ Help.report "NO LICENSE FILE" (Just "LICENSE")
516+ "By publishing a package you are inviting the Elm community to build\
517+ \ upon your work. But without knowing your license, we have no idea if\
520+ "Once you pick an OSI approved license from <https://spdx.org/licenses/>,\
521+ \ you must share that choice in two places. First, the license\
522+ \ identifier must appear in your elm.json file. Second, the full\
523+ \ license text must appear in the root of your project in a file\
524+ \ named LICENSE. Add that file and you will be all set!"
527+ PublishBuildProblem buildProblem ->
528+ toBuildProblemReport buildProblem
530+ PublishMissingTag version ->
531+ let vsn = V.toChars version in
532+ Help.docReport "NO TAG" Nothing
534+ [ "Packages", "must", "be", "tagged", "in", "git,", "but", "I"
535+ , "cannot", "find", "a", D.green (D.fromChars vsn), "tag."
539+ [ "These tags make it possible to find this specific version on GitHub."
540+ , "To tag the most recent commit and push it to GitHub, run this:"
542+ , D.indent 4 $ D.dullyellow $ D.vcat $ map D.fromChars $
543+ [ "git tag -a " ++ vsn ++ " -m \"new release\""
544+ , "git push origin " ++ vsn
546+ , "The -m flag is for a helpful message. Try to make it more informative!"
549+ PublishCannotGetTag version httpError ->
551+ Http.BadHttp _ (HTTP.StatusCodeException response _)
552+ | HTTP.statusCode (HTTP.responseStatus response) == 404 ->
553+ let vsn = V.toChars version in
554+ Help.report "NO TAG ON GITHUB" Nothing
555+ ("You have version " ++ vsn ++ " tagged locally, but not on GitHub.")
557+ "Run the following command to make this tag available on GitHub:"
558+ , D.indent 4 $ D.dullyellow $ D.fromChars $
559+ "git push origin " ++ vsn
561+ "This will make it possible to find your code online based on the version number."
565+ toHttpErrorReport "PROBLEM VERIFYING TAG" httpError
566+ "I need to check that the version tag is registered on GitHub"
568+ PublishCannotGetTagData version url body ->
569+ Help.report "PROBLEM VERIFYING TAG" Nothing
570+ ("I need to check that version " ++ V.toChars version ++ " is tagged on GitHub, so I fetched:")
571+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
573+ "I got the data back, but it was not what I was expecting. The response\
574+ \ body contains " ++ show (BS.length body) ++ " bytes. Here is the "
575+ ++ if BS.length body <= 76 then "whole thing:" else "beginning:"
576+ , D.indent 4 $ D.dullyellow $ D.fromChars $
577+ if BS.length body <= 76
578+ then BS_UTF8.toString body
579+ else take 73 (BS_UTF8.toString body) ++ "..."
581+ "Does this error keep showing up? Maybe there is something weird with your\
582+ \ internet connection. We have gotten reports that schools, businesses,\
583+ \ airports, etc. sometimes intercept requests and add things to the body\
584+ \ or change its contents entirely. Could that be the problem?"
587+ PublishCannotGetZip httpError ->
588+ toHttpErrorReport "PROBLEM DOWNLOADING CODE" httpError $
589+ "I need to check that folks can download and build the source code when they\
590+ \ install this package"
592+ PublishCannotDecodeZip url ->
593+ Help.report "PROBLEM DOWNLOADING CODE" Nothing
594+ "I need to check that folks can download and build the source code when they\
595+ \ install this package, so I downloaded the code from:"
596+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
598+ "I was unable to unzip the archive though. Maybe there is something weird with\
599+ \ your internet connection. We have gotten reports that schools, businesses,\
600+ \ airports, etc. sometimes intercept requests and add things to the body or\
601+ \ change its contents entirely. Could that be the problem?"
604+ PublishCannotGetDocs old new docsProblem ->
605+ toDocsProblemReport docsProblem $
606+ "I need the docs for " ++ V.toChars old ++ " to verify that "
607+ ++ V.toChars new ++ " really does come next"
609+ PublishCannotRegister httpError ->
610+ toHttpErrorReport "PROBLEM PUBLISHING PACKAGE" httpError $
611+ "I need to send information about your package to the package website"
614+ Help.report "NO GIT" Nothing
615+ "I searched your PATH environment variable for `git` and could not\
616+ \ find it. Is it available through your PATH?"
618+ "Who cares about this? Well, I currently use `git` to check if there\
619+ \ are any local changes in your code. Local changes are a good sign\
620+ \ that some important improvements have gotten mistagged, so this\
621+ \ check can be extremely helpful for package authors!"
623+ "We plan to do this without the `git` binary in a future release."
626+ PublishLocalChanges version ->
627+ let vsn = V.toChars version in
628+ Help.docReport "LOCAL CHANGES" Nothing
630+ [ "The", "code", "tagged", "as", D.green (D.fromChars vsn), "in"
631+ , "git", "does", "not", "match", "the", "code", "in", "your"
632+ , "working", "directory.", "This", "means", "you", "have"
633+ , "commits", "or", "local", "changes", "that", "are", "not"
634+ , "going", "to", "be", "published!"
638+ "If you are sure everything is in order, you can run `git checkout "
639+ ++ vsn ++ "` and publish your code from there."
642+ PublishZipBadDetails _ ->
645+ PublishZipApplication ->
648+ PublishZipNoExposed ->
651+ PublishZipBuildProblem _ ->
655+toBadReadmeReport :: String -> String -> Help.Report
656+toBadReadmeReport title summary =
657+ Help.report title (Just "README.md") summary
659+ "When people look at your README, they are wondering:"
661+ [ " - What does this package even do?"
662+ , " - Will it help me solve MY problems?"
665+ "So I recommend starting your README with a small example of the\
666+ \ most common usage scenario. Show people what they can expect if\
669+ "By publishing your package, you are inviting people to invest time in\
670+ \ understanding your work. Spending an hour on your README to communicate your\
671+ \ knowledge more clearly can save the community days or weeks of time in\
672+ \ aggregate, and saving time in aggregate is the whole point of publishing\
673+ \ packages! People really appreciate it, and it makes the whole ecosystem feel\
678+badZipReport :: Help.Report
680+ Help.report "PROBLEM VERIFYING PACKAGE" Nothing
681+ "Before publishing packages, I download the code from GitHub and try to build it\
682+ \ from scratch. That way I can be more confident that it will work for other\
683+ \ people too. But I am not able to build it!"
685+ "I was just able to build your local copy though. Is there some way the version\
686+ \ on GitHub could be different?"
53−toString :: Exit -> String
55− Help.toString (Help.reportToDoc (toReport exit))
58−toStderr :: Exit -> IO ()
691+-- DOCS
60− Help.toStderr (Help.reportToDoc (toReport exit))
63−toJson :: Exit -> Encode.Value
694+data DocsProblem
64−toJson exit =
695+ = DP_Http Http.Error
65− Help.reportToJson (toReport exit)
696+ | DP_Data String BS.ByteString
68−toReport :: Exit -> Help.Report
700+toDocsProblemReport :: DocsProblem -> String -> Help.Report
69−toReport exit =
701+toDocsProblemReport problem context =
703+ DP_Http httpError ->
704+ toHttpErrorReport "PROBLEM LOADING DOCS" httpError context
707+ Help.report "PROBLEM LOADING DOCS" Nothing (context ++ ", so I fetched:")
708+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
710+ "I got the data back, but it was not what I was expecting. The response\
711+ \ body contains " ++ show (BS.length body) ++ " bytes. Here is the "
712+ ++ if BS.length body <= 76 then "whole thing:" else "beginning:"
713+ , D.indent 4 $ D.dullyellow $ D.fromChars $
714+ if BS.length body <= 76
715+ then BS_UTF8.toString body
716+ else take 73 (BS_UTF8.toString body) ++ "..."
718+ "Does this error keep showing up? Maybe there is something weird with your\
719+ \ internet connection. We have gotten reports that schools, businesses,\
720+ \ airports, etc. sometimes intercept requests and add things to the body\
721+ \ or change its contents entirely. Could that be the problem?"
725+ Help.report "PROBLEM LOADING DOCS" Nothing (context ++ ", but the local copy seems to be corrupted.")
727+ "I deleted the cached version, so the next run should download a fresh copy of\
728+ \ the docs. Hopefully that will get you unstuck, but it will not resolve the root\
729+ \ problem if, for example, a 3rd party editor plugin is modifing cached files\
740+ | InstallBadOutline Outline
741+ | InstallBadRegistry RegistryProblem
742+ | InstallNoArgs FilePath
743+ | InstallNoOnlineAppSolution Pkg.Name
744+ | InstallNoOfflineAppSolution Pkg.Name
745+ | InstallNoOnlinePkgSolution Pkg.Name
746+ | InstallNoOfflinePkgSolution Pkg.Name
747+ | InstallHadSolverTrouble Solver
748+ | InstallUnknownPackageOnline Pkg.Name [Pkg.Name]
749+ | InstallUnknownPackageOffline Pkg.Name [Pkg.Name]
750+ | InstallBadDetails Details
753+installToReport :: Install -> Help.Report
754+installToReport exit =
70 case exit of
755 case exit of
71− NoElmJson ->
756+ InstallNoOutline ->
72− Help.report "WELCOME" Nothing
757+ Help.report "NEW PROJECT?" Nothing
73− "It looks like you are trying to start a new Elm project. Very exciting! :D"
758+ "Are you trying to start a new project? Try this command instead:"
759+ [ D.indent 4 $ D.green "elm init"
760+ , D.reflow "It will help you get started!"
763+ InstallBadOutline outline ->
764+ toOutlineReport outline
766+ InstallBadRegistry problem ->
767+ toRegistryProblemReport "PROBLEM LOADING PACKAGE LIST" problem $
768+ "I need the list of published packages to figure out how to install things"
770+ InstallNoArgs elmHome ->
771+ Help.report "INSTALL WHAT?" Nothing
772+ "I am expecting commands like:"
773+ [ D.green $ D.indent 4 $ D.vcat $
774+ [ "elm install elm/http"
775+ , "elm install elm/json"
776+ , "elm install elm/random"
779+ ["In","JavaScript","folks","run","`npm install`","to","start","projects."
780+ ,"\"Gotta","download","everything!\"","But","why","download","packages"
781+ ,"again","and","again?","Instead,","Elm","caches","packages","in"
782+ ,D.dullyellow (D.fromChars elmHome)
783+ ,"so","each","one","is","downloaded","and","built","ONCE","on","your","machine."
784+ ,"Elm","projects","check","that","cache","before","trying","the","internet."
785+ ,"This","reduces","build","times,","reduces","server","costs,","and","makes","it"
786+ ,"easier","to","work","offline.","As","a","result"
787+ ,D.dullcyan "elm install","is","only","for","adding","dependencies","to","elm.json,"
788+ ,"whereas",D.dullcyan "elm make","is","in","charge","of","gathering","dependencies"
789+ ,"and","building","everything.","So","maybe","try",D.green "elm make","instead?"
793+ InstallNoOnlineAppSolution pkg ->
794+ Help.report "CANNOT FIND COMPATIBLE VERSION" (Just "elm.json")
796+ "I cannot find a version of " ++ Pkg.toChars pkg ++ " that is compatible\
797+ \ with your existing dependencies."
800+ "I checked all the published versions. When that failed, I tried to find any\
801+ \ compatible combination of these packages, even if it meant changing all your\
802+ \ existing dependencies! That did not work either!"
804+ "This is most likely to happen when a package is not upgraded yet. Maybe a new\
805+ \ version of Elm came out recently? Maybe a common package was changed recently?\
806+ \ Maybe a better package came along, so there was no need to upgrade this one?\
807+ \ Try asking around https://elm-lang.org/community to learn what might be going on\
808+ \ with this package."
810+ "Whatever the case, please be kind to the relevant package authors! Having\
811+ \ friendly interactions with users is great motivation, and conversely, getting\
812+ \ berated by strangers on the internet sucks your soul dry. Furthermore, package\
813+ \ authors are humans with families, friends, jobs, vacations, responsibilities,\
814+ \ goals, etc. They face obstacles outside of their technical work you will never\
815+ \ know about, so please assume the best and try to be patient and supportive!"
818+ InstallNoOfflineAppSolution pkg ->
819+ Help.report "CANNOT FIND COMPATIBLE VERSION LOCALLY" (Just "elm.json")
821+ "I cannot find a version of " ++ Pkg.toChars pkg ++ " that is compatible\
822+ \ with your existing dependencies."
825+ "I was not able to connect to https://package.elm-lang.org/ though, so I was only\
826+ \ able to look through packages that you have downloaded in the past."
828+ "Try again later when you have internet!"
831+ InstallNoOnlinePkgSolution pkg ->
832+ Help.report "CANNOT FIND COMPATIBLE VERSION" (Just "elm.json")
834+ "I cannot find a version of " ++ Pkg.toChars pkg ++ " that is compatible\
835+ \ with your existing constraints."
838+ "With applications, I try to broaden the constraints to see if anything works,\
839+ \ but messing with package constraints is much more delicate business. E.g. making\
840+ \ your constraints stricter may make it harder for applications to find compatible\
841+ \ dependencies. So fixing something here may break it for a lot of other people!"
843+ "So I recommend making an application with the same dependencies as your package.\
844+ \ See if there is a solution at all. From there it may be easier to figure out\
845+ \ how to proceed in a way that will disrupt your users as little as possible. And\
846+ \ the solution may be to help other package authors to get their packages updated,\
847+ \ or to drop a dependency entirely."
850+ InstallNoOfflinePkgSolution pkg ->
851+ Help.report "CANNOT FIND COMPATIBLE VERSION LOCALLY" (Just "elm.json")
853+ "I cannot find a version of " ++ Pkg.toChars pkg ++ " that is compatible\
854+ \ with your existing constraints."
857+ "I was not able to connect to https://package.elm-lang.org/ though, so I was only\
858+ \ able to look through packages that you have downloaded in the past."
860+ "Try again later when you have internet!"
863+ InstallHadSolverTrouble solver ->
864+ toSolverReport solver
866+ InstallUnknownPackageOnline pkg suggestions ->
867+ Help.docReport "UNKNOWN PACKAGE" Nothing
870+ ["I","cannot","find","a","package","named",D.red (D.fromPackage pkg) <> "."]
873+ "I looked through https://package.elm-lang.org for packages with similar names\
875+ , D.indent 4 $ D.dullyellow $ D.vcat $ map D.fromPackage suggestions
876+ , D.reflow $ "Maybe you want one of these instead?"
879+ InstallUnknownPackageOffline pkg suggestions ->
880+ Help.docReport "UNKNOWN PACKAGE" Nothing
883+ ["I","cannot","find","a","package","named",D.red (D.fromPackage pkg) <> "."]
886+ "I could not connect to https://package.elm-lang.org though, so new packages may\
887+ \ have been published since I last updated my local cache of package names."
889+ "Looking through the locally cached names, the closest ones are:"
890+ , D.indent 4 $ D.dullyellow $ D.vcat $ map D.fromPackage suggestions
891+ , D.reflow $ "Maybe you want one of these instead?"
894+ InstallBadDetails details ->
895+ toDetailsReport details
903+ = SolverBadCacheData Pkg.Name V.Version
904+ | SolverBadHttpData Pkg.Name V.Version String
905+ | SolverBadHttp Pkg.Name V.Version Http.Error
908+toSolverReport :: Solver -> Help.Report
909+toSolverReport problem =
911+ SolverBadCacheData pkg vsn ->
912+ Help.report "PROBLEM SOLVING PACKAGE CONSTRAINTS" Nothing
914+ "I need the elm.json of " ++ Pkg.toChars pkg ++ " " ++ V.toChars vsn ++ " to\
915+ \ help me search for a set of compatible packages. I had it cached locally, but\
916+ \ it looks like the file was corrupted!"
919+ "I deleted the cached version, so the next run should download a fresh copy.\
920+ \ Hopefully that will get you unstuck, but it will not resolve the root\
921+ \ problem if a 3rd party tool is modifing cached files for some reason."
924+ SolverBadHttpData pkg vsn url ->
925+ Help.report "PROBLEM SOLVING PACKAGE CONSTRAINTS" Nothing
927+ "I need the elm.json of " ++ Pkg.toChars pkg ++ " " ++ V.toChars vsn ++ " to\
928+ \ help me search for a set of compatible packages, but I ran into corrupted\
929+ \ information from:"
931+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
933+ "Is something weird with your internet connection. We have gotten reports that\
934+ \ schools, businesses, airports, etc. sometimes intercept requests and add things\
935+ \ to the body or change its contents entirely. Could that be the problem?"
938+ SolverBadHttp pkg vsn httpError ->
939+ toHttpErrorReport "PROBLEM SOLVING PACKAGE CONSTRAINTS" httpError $
940+ "I need the elm.json of " ++ Pkg.toChars pkg ++ " " ++ V.toChars vsn
941+ ++ " to help me search for a set of compatible packages"
949+ = OutlineHasBadStructure (Decode.Error OutlineProblem)
950+ | OutlineHasMissingSrcDirs FilePath [FilePath]
951+ | OutlineHasDuplicateSrcDirs FilePath FilePath FilePath
959+ | OP_BadPkgName Row Col
960+ | OP_BadVersion Row Col
961+ | OP_BadConstraint C.Error
962+ | OP_BadModuleName Row Col
963+ | OP_BadModuleHeaderTooLong
964+ | OP_BadDependencyName Row Col
965+ | OP_BadLicense Json.String [Json.String]
966+ | OP_BadSummaryTooLong
970+toOutlineReport :: Outline -> Help.Report
971+toOutlineReport problem =
973+ OutlineHasBadStructure decodeError ->
974+ Json.toReport "elm.json" (Json.FailureToReport toOutlineProblemReport) decodeError $
975+ Json.ExplicitReason "I ran into a problem with your elm.json file."
977+ OutlineHasMissingSrcDirs dir dirs ->
980+ Help.report "MISSING SOURCE DIRECTORY" (Just "elm.json")
981+ "I need a valid elm.json file, but the \"source-directories\" field lists the following directory:"
982+ [ D.indent 4 $ D.red $ D.fromChars dir
984+ "I cannot find it though. Is it missing? Is there a typo?"
988+ Help.report "MISSING SOURCE DIRECTORIES" (Just "elm.json")
989+ "I need a valid elm.json file, but the \"source-directories\" field lists the following directories:"
990+ [ D.indent 4 $ D.vcat $
991+ map (D.red . D.fromChars) (dir:dirs)
993+ "I cannot find them though. Are they missing? Are there typos?"
996+ OutlineHasDuplicateSrcDirs canonicalDir dir1 dir2 ->
997+ if dir1 == dir2 then
998+ Help.report "REDUNDANT SOURCE DIRECTORIES" (Just "elm.json")
999+ "I need a valid elm.json file, but the \"source-directories\" field lists the same directory twice:"
1000+ [ D.indent 4 $ D.vcat $
1001+ map (D.red . D.fromChars) [dir1,dir2]
1003+ "Remove one of the entries!"
1006+ Help.report "REDUNDANT SOURCE DIRECTORIES" (Just "elm.json")
1007+ "I need a valid elm.json file, but the \"source-directories\" field has some redundant directories:"
1008+ [ D.indent 4 $ D.vcat $
1009+ map (D.red . D.fromChars) [dir1,dir2]
1011+ "These are two different ways of refering to the same directory:"
1012+ , D.indent 4 $ D.dullyellow $ D.fromChars canonicalDir
1014+ "Remove one of the redundant entries from your \"source-directories\" field."
1017+ OutlineNoPkgCore ->
1018+ Help.report "MISSING DEPENDENCY" (Just "elm.json")
1019+ "I need to see an \"elm/core\" dependency your elm.json file. The default imports\
1020+ \ of `List` and `Maybe` do not work without it."
1022+ "If you modified your elm.json by hand, try to change it back! And if you are\
1023+ \ having trouble getting back to a working elm.json, it may be easier to find a\
1024+ \ working package and start fresh with their elm.json file."
1027+ OutlineNoAppCore ->
1028+ Help.report "MISSING DEPENDENCY" (Just "elm.json")
1029+ "I need to see an \"elm/core\" dependency your elm.json file. The default imports\
1030+ \ of `List` and `Maybe` do not work without it."
1032+ "If you modified your elm.json by hand, try to change it back! And if you are\
1033+ \ having trouble getting back to a working elm.json, it may be easier to delete it\
1034+ \ and use `elm init` to start fresh."
1037+ OutlineNoAppJson ->
1038+ Help.report "MISSING DEPENDENCY" (Just "elm.json")
1039+ "I need to see an \"elm/json\" dependency your elm.json file. It helps me handle\
1040+ \ flags and ports."
1042+ "If you modified your elm.json by hand, try to change it back! And if you are\
1043+ \ having trouble getting back to a working elm.json, it may be easier to delete it\
1044+ \ and use `elm init` to start fresh."
1048+toOutlineProblemReport :: FilePath -> Code.Source -> Json.Context -> A.Region -> OutlineProblem -> Help.Report
1049+toOutlineProblemReport path source _ region problem =
1051+ toHighlight row col =
1052+ Just $ A.Region (A.Position row col) (A.Position row col)
1054+ toSnippet title highlight pair =
1055+ Help.jsonReport title (Just path) $
1056+ Code.toSnippet source region highlight pair
1060+ toSnippet "UNEXPECTED TYPE" Nothing
1062+ "I got stuck while reading your elm.json file. I cannot handle a \"type\" like this:"
1064+ ["Try","changing","the","\"type\"","to"
1065+ ,D.green "\"application\"","or",D.green "\"package\"","instead."
1069+ OP_BadPkgName row col ->
1070+ toSnippet "INVALID PACKAGE NAME" (toHighlight row col)
1072+ "I got stuck while reading your elm.json file. I ran into trouble with the package name:"
1075+ ["Package","names","are","always","written","as"
1076+ ,D.green "\"author/project\""
1077+ ,"so","I","am","expecting","to","see","something","like:"
1079+ , D.dullyellow $ D.indent 4 $ D.vcat $
1080+ [ "\"mdgriffith/elm-ui\""
1081+ , "\"w0rm/elm-physics\""
1082+ , "\"Microsoft/elm-json-tree-view\""
1083+ , "\"FordLabs/elm-star-rating\""
1084+ , "\"1602/json-schema\""
1087+ "The author name should match your GitHub name exactly, and the project name\
1088+ \ needs to follow these rules:"
1089+ , D.indent 4 $ D.vcat $
1090+ [ "+--------------------------------------+-----------+-----------+"
1091+ , "| RULE | BAD | GOOD |"
1092+ , "+--------------------------------------+-----------+-----------+"
1093+ , "| only lower case, digits, and hyphens | elm-HTTP | elm-http |"
1094+ , "| no leading digits | 3D | elm-3d |"
1095+ , "| no non-ASCII characters | elm-bjørn | elm-bear |"
1096+ , "| no underscores | elm_ui | elm-ui |"
1097+ , "| no double hyphens | elm--hash | elm-hash |"
1098+ , "| no starting or ending hyphen | -elm-tar- | elm-tar |"
1099+ , "+--------------------------------------+-----------+-----------+"
1102+ "These rules only apply to the project name, so you should never need\
1103+ \ to change your GitHub name!"
1107+ OP_BadVersion row col ->
1108+ toSnippet "PROBLEM WITH VERSION" (toHighlight row col)
1110+ "I got stuck while reading your elm.json file. I was expecting a version number here:"
1112+ ["I","need","something","like",D.green "\"1.0.0\"","or",D.green "\"2.0.4\""
1113+ ,"that","explicitly","states","all","three","numbers!"
1117+ OP_BadConstraint constraintError ->
1118+ case constraintError of
1119+ C.BadFormat row col ->
1120+ toSnippet "PROBLEM WITH CONSTRAINT" (toHighlight row col)
1122+ "I got stuck while reading your elm.json file. I do not understand this version constraint:"
1125+ ["I","need","something","like",D.green "\"1.0.0 <= v < 2.0.0\""
1126+ ,"that","explicitly","lists","the","lower","and","upper","bounds."
1129+ "The spaces in there are required! Taking them out will confuse me. Adding\
1130+ \ extra spaces confuses me too. I recommend starting with a valid example\
1131+ \ and just changing the version numbers."
1135+ C.InvalidRange before after ->
1136+ if before == after then
1137+ toSnippet "PROBLEM WITH CONSTRAINT" Nothing
1139+ "I got stuck while reading your elm.json file. I ran into an invalid version constraint:"
1141+ ["Elm","checks","that","all","package","APIs","follow","semantic","versioning,"
1142+ ,"so","it","is","best","to","use","wide","constraints.","I","recommend"
1143+ ,D.green $ "\"" <> D.fromVersion before <> " <= v < " <> D.fromVersion (V.bumpMajor after) <> "\""
1144+ ,"since","it","is","guaranteed","that","breaking","API","changes","cannot"
1145+ ,"happen","in","any","of","the","versions","in","that","range."
1150+ toSnippet "PROBLEM WITH CONSTRAINT" Nothing
1152+ "I got stuck while reading your elm.json file. I ran into an invalid version constraint:"
1154+ ["Maybe","you","want","something","like"
1155+ ,D.green $ "\"" <> D.fromVersion before <> " <= v < " <> D.fromVersion (V.bumpMajor before) <> "\""
1156+ ,"instead?","Elm","checks","that","all","package","APIs","follow","semantic"
1157+ ,"versioning,","so","it","is","guaranteed","that","breaking","API","changes"
1158+ ,"cannot","happen","in","any","of","the","versions","in","that","range."
1162+ OP_BadModuleName row col ->
1163+ toSnippet "PROBLEM WITH MODULE NAME" (toHighlight row col)
1165+ "I got stuck while reading your elm.json file. I was expecting a module name here:"
1167+ ["I","need","something","like",D.green "\"Html.Events\""
1168+ ,"or",D.green "\"Browser.Navigation\""
1169+ ,"where","each","segment","starts","with","a","capital"
1170+ ,"letter","and","the","segments","are","separated","by","dots."
1174+ OP_BadModuleHeaderTooLong ->
1175+ toSnippet "HEADER TOO LONG" Nothing
1177+ "I got stuck while reading your elm.json file. This section header is too long:"
1180+ ["I","need","it","to","be"
1181+ ,D.green "under",D.green "20",D.green "bytes"
1182+ ,"so","it","renders","nicely","on","the","package","website!"
1185+ "I count the length in bytes, so using non-ASCII characters costs extra.\
1186+ \ Please report your case at https://github.com/elm/compiler/issues if this seems\
1187+ \ overly restrictive for your needs."
1191+ OP_BadDependencyName row col ->
1192+ toSnippet "PROBLEM WITH DEPENDENCY NAME" (toHighlight row col)
1194+ "I got stuck while reading your elm.json file. There is something wrong with this dependency name:"
1197+ ["Package","names","always","include","the","name","of","the","author,"
1198+ ,"so","I","am","expecting","to","see","dependencies","like"
1199+ ,D.dullyellow "\"mdgriffith/elm-ui\"","and"
1200+ ,D.dullyellow "\"Microsoft/elm-json-tree-view\"" <> "."
1203+ ["I","generally","recommend","finding","the","package","you","want","on"
1204+ ,"the","package","website,","and","installing","it","with","the"
1205+ ,D.green "elm install","command!"
1210+ OP_BadLicense _ suggestions ->
1211+ toSnippet "UNKNOWN LICENSE" Nothing
1213+ "I got stuck while reading your elm.json file. I do not know about this type of license:"
1217+ ["Elm","packages","generally","use"
1218+ ,D.green "\"BSD-3-Clause\"","or",D.green "\"MIT\"" <> ","
1219+ ,"but","I","accept","any","OSI","approved","SPDX","license."
1220+ ,"Here","some","that","seem","close","to","what","you","wrote:"
1222+ , D.indent 4 $ D.dullyellow $ D.vcat $ map (D.fromChars . Json.toChars) suggestions
1224+ "Check out https://spdx.org/licenses/ for the full list of options."
1228+ OP_BadSummaryTooLong ->
1229+ toSnippet "SUMMARY TOO LONG" Nothing
1231+ "I got stuck while reading your elm.json file. Your \"summary\" is too long:"
1234+ ["I","need","it","to","be"
1235+ ,D.green "under",D.green "80",D.green "bytes"
1236+ ,"so","it","renders","nicely","on","the","package","website!"
1239+ "I count the length in bytes, so using non-ASCII characters costs extra.\
1240+ \ Please report your case at https://github.com/elm/compiler/issues if this seems\
1241+ \ overly restrictive for your needs."
1246+ toSnippet "NO SOURCE DIRECTORIES" Nothing
1248+ "I got stuck while reading your elm.json file. You do not have any \"source-directories\" listed here:"
1250+ ["I","need","something","like",D.green "[\"src\"]"
1251+ ,"so","I","know","where","to","look","for","your","modules!"
1261+ = DetailsNoSolution
1262+ | DetailsNoOfflineSolution
1263+ | DetailsSolverProblem Solver
1264+ | DetailsBadElmInPkg C.Constraint
1265+ | DetailsBadElmInAppOutline V.Version
1266+ | DetailsHandEditedDependencies
1267+ | DetailsBadOutline Outline
1268+ | DetailsCannotGetRegistry RegistryProblem
1269+ | DetailsBadDeps FilePath [DetailsBadDep]
1273+ = BD_BadDownload Pkg.Name V.Version PackageProblem
1274+ | BD_BadBuild Pkg.Name V.Version (Map.Map Pkg.Name V.Version)
1277+toDetailsReport :: Details -> Help.Report
1278+toDetailsReport details =
1280+ DetailsNoSolution ->
1281+ Help.report "INCOMPATIBLE DEPENDENCIES" (Just "elm.json")
1282+ "The dependencies in your elm.json are not compatible."
74 [ D.fillSep
1283 [ D.fillSep
75− ["I","very","highly","recommend","working","through"
1284+ ["Did","you","change","them","by","hand?","Try","to","change","it","back!"
76− ,D.green "<https://guide.elm-lang.org>","which","will","teach","you","the"
1285+ ,"It","is","much","more","reliable","to","add","dependencies","with",D.green "elm install" <> "."
77− ,"basics","of","Elm,","including","how","to","start","new","projects."
1288+ "Please ask for help on the community forums if you try those paths and are still\
1289+ \ having problems!"
1292+ DetailsNoOfflineSolution ->
1293+ Help.report "TROUBLE VERIFYING DEPENDENCIES" (Just "elm.json")
1294+ "I could not connect to https://package.elm-lang.org to get the latest list of\
1295+ \ packages, and I was unable to verify your dependencies with the information I\
1296+ \ have cached locally."
1298+ "Are you able to connect to the internet? These dependencies may work once you\
1299+ \ get access to the registry!"
1301+ ["If","you","changed","your","dependencies","by","hand,","try","to","change","them","back!"
1302+ ,"It","is","much","more","reliable","to","add","dependencies","with",D.green "elm install" <> "."
1306+ DetailsSolverProblem solver ->
1307+ toSolverReport solver
1309+ DetailsBadElmInPkg constraint ->
1310+ Help.report "ELM VERSION MISMATCH" (Just "elm.json")
1311+ "Your elm.json says this package needs a version of Elm in this range:"
1312+ [ D.indent 4 $ D.dullyellow $ D.fromChars $ C.toChars constraint
79 , D.fillSep
1313 , D.fillSep
80− ["For","folks","who","have","already","built","stuff","with","Elm,","the"
1314+ [ "But", "you", "are", "using", "Elm"
81− ,"problem","is","just","that","there","is","no",D.dullyellow "elm.json","yet."
1315+ , D.red (D.fromVersion V.compiler)
82− ,"If","you","want","to","work","from","an","example,","check","out","the"
1316+ , "right", "now."
83− ,"one","at","<https://github.com/evancz/elm-todomvc/blob/master/elm.json>"
1317+ ]
1320+ DetailsBadElmInAppOutline version ->
1321+ Help.report "ELM VERSION MISMATCH" (Just "elm.json")
1322+ "Your elm.json says this application needs a different version of Elm."
1325+ , D.green (D.fromVersion version) <> ","
1326+ , "but", "you", "are", "using"
1327+ , D.red (D.fromVersion V.compiler)
1332+ DetailsHandEditedDependencies ->
1333+ Help.report "ERROR IN DEPENDENCIES" (Just "elm.json")
1334+ "It looks like the dependencies elm.json in were edited by hand (or by a 3rd\
1335+ \ party tool) leaving them in an invalid state."
1337+ ["Try","to","change","them","back","to","what","they","were","before!"
1338+ ,"It","is","much","more","reliable","to","add","dependencies","with",D.green "elm install" <> "."
85− , D.reflow
1340+ , D.reflow $
86− "Whatever your scenario, I hope you have a lovely time using Elm!"
1341+ "Please ask for help on the community forums if you try those paths and are still\
1342+ \ having problems!"
89− Assets assetExit ->
1345+ DetailsBadOutline outline ->
90− Asset.toReport assetExit
1346+ toOutlineReport outline
92− Bump bumpExit ->
1348+ DetailsCannotGetRegistry problem ->
93− Bump.toReport bumpExit
1349+ toRegistryProblemReport "PROBLEM LOADING PACKAGE LIST" problem $
1350+ "I need the list of published packages to verify your dependencies"
95− Compile e es ->
1352+ DetailsBadDeps cacheDir deps ->
96− Help.compilerReport e es
1353+ case List.sortOn toBadDepRank deps of
1355+ Help.report "PROBLEM BUILDING DEPENDENCIES" Nothing
1356+ "I am not sure what is going wrong though."
1358+ "I would try deleting the " ++ cacheDir ++ " and elm-stuff/ directories, then\
1359+ \ trying to build again. That will work if some cached files got corrupted\
1362+ "If that does not work, go to https://elm-lang.org/community and ask for\
1363+ \ help. This is a weird case!"
98− Crawl crawlExit ->
1366+ d:_ ->
99− Crawl.toReport crawlExit
1367+ case d of
1368+ BD_BadDownload pkg vsn packageProblem ->
1369+ toPackageProblemReport pkg vsn packageProblem
101− Cycle names ->
1371+ BD_BadBuild pkg vsn fingerprint ->
1372+ Help.report "PROBLEM BUILDING DEPENDENCIES" Nothing
1373+ "I ran into a compilation error when trying to build the following package:"
1374+ [ D.indent 4 $ D.red $ D.fromChars $ Pkg.toChars pkg ++ " " ++ V.toChars vsn
1376+ "This probably means it has package constraints that are too wide. It may be\
1377+ \ possible to tweak your elm.json to avoid the root problem as a stopgap. Head\
1378+ \ over to https://elm-lang.org/community to get help figuring out how to take\
1381+ "To help with the root problem, please report this to the package author along\
1382+ \ with the following information:"
1383+ , D.indent 4 $ D.vcat $
1384+ map (\(p,v) -> D.fromChars $ Pkg.toChars p ++ " " ++ V.toChars v) $
1385+ Map.toList fingerprint
1387+ "If you want to help out even more, try building the package locally. That should\
1388+ \ give you much more specific information about why this package is failing to\
1389+ \ build, which will in turn make it easier for the package author to fix it!"
1393+toBadDepRank :: DetailsBadDep -> Int -- lower is better
1394+toBadDepRank badDep =
1396+ BD_BadDownload _ _ _ -> 0
1397+ BD_BadBuild _ _ _ -> 1
1405+ = PP_BadEndpointRequest Http.Error
1406+ | PP_BadEndpointContent String
1407+ | PP_BadArchiveRequest Http.Error
1408+ | PP_BadArchiveContent String
1409+ | PP_BadArchiveHash String String String
1412+toPackageProblemReport :: Pkg.Name -> V.Version -> PackageProblem -> Help.Report
1413+toPackageProblemReport pkg vsn problem =
1416+ Pkg.toChars pkg ++ " " ++ V.toChars vsn
1419+ PP_BadEndpointRequest httpError ->
1420+ toHttpErrorReport "PROBLEM DOWNLOADING PACKAGE" httpError $
1421+ "I need to find the latest download link for " ++ thePackage
1423+ PP_BadEndpointContent url ->
102− Help.report "IMPORT CYCLE" Nothing
1424+ Help.report "PROBLEM DOWNLOADING PACKAGE" Nothing
103− "Your module imports form a cycle:"
1425+ (
104− [ D.cycle 4 names
1426+ "I need to find the latest download link for " ++ thePackage ++ ", but I ran into corrupted information from:"
1428+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
105 , D.reflow $
1429 , D.reflow $
106− "Learn more about why this is disallowed and how to break cycles here:"
1430+ "Is something weird with your internet connection. We have gotten reports that\
107− ++ D.makeLink "import-cycles"
1431+ \ schools, businesses, airports, etc. sometimes intercept requests and add things\
1432+ \ to the body or change its contents entirely. Could that be the problem?"
110− Deps depsExit ->
1435+ PP_BadArchiveRequest httpError ->
111− Deps.toReport depsExit
1436+ toHttpErrorReport "PROBLEM DOWNLOADING PACKAGE" httpError $
1437+ "I was trying to download the source code for " ++ thePackage
1439+ PP_BadArchiveContent url ->
1440+ Help.report "PROBLEM DOWNLOADING PACKAGE" Nothing
1442+ "I downloaded the source code for " ++ thePackage ++ " from:"
1444+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
1446+ "But I was unable to unzip the data. Maybe there is something weird with\
1447+ \ your internet connection. We have gotten reports that schools, businesses,\
1448+ \ airports, etc. sometimes intercept requests and add things to the body or\
1449+ \ change its contents entirely. Could that be the problem?"
1452+ PP_BadArchiveHash url expectedHash actualHash ->
1453+ Help.report "CORRUPT PACKAGE DATA" Nothing
1455+ "I downloaded the source code for " ++ thePackage ++ " from:"
1457+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
1458+ , D.reflow "But it looks like the hash of the archive has changed since publication:"
1459+ , D.vcat $ map D.fromChars $
1460+ [ " Expected: " ++ expectedHash
1461+ , " Actual: " ++ actualHash
1464+ "This usually means that the package author moved the version\
1465+ \ tag, so report it to them and see if that is the issue. Folks\
1466+ \ on Elm slack can probably help as well."
113− Diff commandsExit ->
1471+-- REGISTRY PROBLEM
114− Diff.toReport commandsExit
117− Make.toReport makeExit
119− Publish publishExit ->
1474+data RegistryProblem
120− Publish.toReport publishExit
1475+ = RP_Http Http.Error
1476+ | RP_Data String BS.ByteString
122− BadHttp url httpExit ->
123− Http.toReport url httpExit
125− NoSolution badPackages ->
1479+toRegistryProblemReport :: String -> RegistryProblem -> String -> Help.Report
126− case badPackages of
1480+toRegistryProblemReport title problem context =
1483+ toHttpErrorReport title err context
1485+ RP_Data url body ->
1486+ Help.report title Nothing (context ++ ", so I fetched:")
1487+ [ D.indent 4 $ D.dullyellow $ D.fromChars url
1489+ "I got the data back, but it was not what I was expecting. The response\
1490+ \ body contains " ++ show (BS.length body) ++ " bytes. Here is the "
1491+ ++ if BS.length body <= 76 then "whole thing:" else "beginning:"
1492+ , D.indent 4 $ D.dullyellow $ D.fromChars $
1493+ if BS.length body <= 76
1494+ then BS_UTF8.toString body
1495+ else take 73 (BS_UTF8.toString body) ++ "..."
1497+ "Does this error keep showing up? Maybe there is something weird with your\
1498+ \ internet connection. We have gotten reports that schools, businesses,\
1499+ \ airports, etc. sometimes intercept requests and add things to the body\
1500+ \ or change its contents entirely. Could that be the problem?"
1504+toHttpErrorReport :: String -> Http.Error -> String -> Help.Report
1505+toHttpErrorReport title err context =
1507+ toHttpReport intro url details =
1508+ Help.report title Nothing intro $
1509+ D.indent 4 (D.dullyellow (D.fromChars url)) : details
1512+ Http.BadUrl url reason ->
1513+ toHttpReport (context ++ ", so I wanted to fetch:") url
1514+ [ D.reflow $ "But my HTTP library is saying this is not a valid URL. It is saying:"
1515+ , D.indent 4 $ D.fromChars reason
1517+ "This may indicate that there is some problem in the compiler, so please open an\
1518+ \ issue at https://github.com/elm/compiler/issues listing your operating system, Elm\
1519+ \ version, the command you ran, the terminal output, and any additional information\
1520+ \ that might help others reproduce the error."
1523+ Http.BadHttp url httpExceptionContent ->
1524+ case httpExceptionContent of
1525+ HTTP.StatusCodeException response body ->
1527+ (HTTP.Status code message) = HTTP.responseStatus response
1529+ toHttpReport (context ++ ", so I tried to fetch:") url
1531+ ["But","it","came","back","as",D.red (D.fromInt code)]
1532+ ++ map D.fromChars (words (BS_UTF8.toString message))
1533+ , D.indent 4 $ D.reflow $ BS_UTF8.toString body
1535+ "This may mean some online endpoint changed in an unexpected way, so if does not\
1536+ \ seem like something on your side is causing this (e.g. firewall) please report\
1537+ \ this to https://github.com/elm/compiler/issues with your operating system, Elm\
1538+ \ version, the command you ran, the terminal output, and any additional information\
1539+ \ that can help others reproduce the error!"
1542+ HTTP.TooManyRedirects responses ->
1543+ toHttpReport (context ++ ", so I tried to fetch:") url
1544+ [ D.reflow $ "But I gave up after following these " ++ show (length responses) ++ " redirects:"
1545+ , D.indent 4 $ D.vcat $ map toRedirectDoc responses
1547+ "Is it possible that your internet connection intercepts certain requests? That\
1548+ \ sometimes causes problems for folks in schools, businesses, airports, hotels,\
1549+ \ and certain countries. Try asking for help locally or in a community forum!"
1553+ toHttpReport (context ++ ", so I tried to fetch:") url
1554+ [ D.reflow $ "But my HTTP library is giving me the following error message:"
1555+ , D.indent 4 $ D.fromChars (show otherException)
1557+ "Are you somewhere with a slow internet connection? Or no internet?\
1558+ \ Does the link I am trying to fetch work in your browser? Maybe the\
1559+ \ site is down? Does your internet connection have a firewall that\
1560+ \ blocks certain domains? It is usually something like that!"
1563+ Http.BadMystery url someException ->
1564+ toHttpReport (context ++ ", so I tried to fetch:") url
1565+ [ D.reflow $ "But I ran into something weird! I was able to extract this error message:"
1566+ , D.indent 4 $ D.fromChars (show someException)
1568+ "Is it possible that your internet connection intercepts certain requests? That\
1569+ \ sometimes causes problems for folks in schools, businesses, airports, hotels,\
1570+ \ and certain countries. Try asking for help locally or in a community forum!"
1574+toRedirectDoc :: HTTP.Response body -> D.Doc
1575+toRedirectDoc response =
1577+ (HTTP.Status code message) = HTTP.responseStatus response
1579+ case List.lookup HTTP.hLocation (HTTP.responseHeaders response) of
1580+ Just loc -> D.red (D.fromInt code) <> " - " <> D.fromChars (BS_UTF8.toString loc)
1581+ Nothing -> D.red (D.fromInt code) <> " - " <> D.fromChars (BS_UTF8.toString message)
1590+ | MakeCannotOptimizeAndDebug
1591+ | MakeBadDetails Details
1592+ | MakeAppNeedsFileNames
1593+ | MakePkgNeedsExposing
1594+ | MakeMultipleFilesIntoHtml
1596+ | MakeNonMainFilesIntoJavaScript ModuleName.Raw [ModuleName.Raw]
1597+ | MakeCannotBuild BuildProblem
1598+ | MakeBadGenerate Generate
1601+makeToReport :: Make -> Help.Report
1605+ Help.report "NO elm.json FILE" Nothing
1606+ "It looks like you are starting a new Elm project. Very exciting! Try running:"
1607+ [ D.indent 4 $ D.green $ "elm init"
1609+ "It will help you get set up. It is really simple!"
1612+ MakeCannotOptimizeAndDebug ->
1613+ Help.docReport "CLASHING FLAGS" Nothing
1615+ ["I","cannot","compile","with",D.red "--optimize","and"
1616+ ,D.red "--debug","at","the","same","time."
1620+ "I need to take away information to optimize things, and I need to\
1621+ \ add information to add the debugger. It is impossible to do both\
1622+ \ at once though! Pick just one of those flags and it should work!"
1625+ MakeBadDetails detailsProblem ->
1626+ toDetailsReport detailsProblem
1628+ MakeAppNeedsFileNames ->
1629+ Help.report "NO INPUT" Nothing
1630+ "What should I make though? I need specific files like:"
1632+ [ D.indent 4 $ D.green "elm make src/Main.elm"
1633+ , D.indent 4 $ D.green "elm make src/This.elm src/That.elm"
1636+ "I recommend reading through https://guide.elm-lang.org for guidance on what to\
1637+ \ actually put in those files!"
1640+ MakePkgNeedsExposing ->
1641+ Help.report "NO INPUT" Nothing
1642+ "What should I make though? I need specific files like:"
1644+ [ D.indent 4 $ D.green "elm make src/Main.elm"
1645+ , D.indent 4 $ D.green "elm make src/This.elm src/That.elm"
1648+ "You can also entries to the \"exposed-modules\" list in your elm.json file, and\
1649+ \ I will try to compile the relevant files."
1652+ MakeMultipleFilesIntoHtml ->
1653+ Help.report "TOO MANY FILES" Nothing
1655+ "When producing an HTML file, I can only handle one file."
1658+ ["Switch","to",D.dullyellow "--output=/dev/null","if","you","just","want"
1659+ ,"to","get","compile","errors.","This","skips","the","code","gen","phase,"
1660+ ,"so","it","can","be","a","bit","faster","than","other","options","sometimes."
1663+ ["Switch","to",D.dullyellow "--output=elm.js","if","you","want","multiple"
1664+ ,"`main`","values","available","in","a","single","JavaScript","file.","Then"
1665+ ,"you","can","make","your","own","customized","HTML","file","that","embeds"
1666+ ,"multiple","Elm","nodes.","The","generated","JavaScript","also","shares"
1667+ ,"dependencies","between","modules,","so","it","should","be","smaller","than"
1668+ ,"compiling","each","module","separately."
1673+ Help.report "NO MAIN" Nothing
1675+ "When producing an HTML file, I require that the given file has a `main` value.\
1676+ \ That way I have something to show on screen!"
1679+ "Try adding a `main` value to your file? Or if you just want to verify that this\
1680+ \ module compiles, switch to --output=/dev/null to skip the code gen phase\
1683+ "Adding a `main` value can be as brief as adding something like this:"
1685+ [ D.fillSep [D.cyan "import","Html"]
1687+ , D.fillSep [D.green "main","="]
1688+ , D.indent 2 $ D.fillSep [D.cyan "Html" <> ".text",D.dullyellow "\"Hello!\""]
1691+ "From there I can create an HTML file that says \"Hello!\" on screen. I recommend\
1692+ \ looking through https://guide.elm-lang.org for more guidance on how to fill in\
1693+ \ the `main` value."
1696+ MakeNonMainFilesIntoJavaScript m ms ->
128− Help.report "UNSOLVABLE DEPENDENCIES" (Just "elm.json")
1699+ Help.report "NO MAIN" Nothing
129− "This usually happens if you try to modify dependency constraints by\
1700+ (
130− \ hand. I recommend deleting any dependency you added recently (or all\
1701+ "When producing a JS file, I require that the given file has a `main` value. That\
131− \ of them if things are bad) and then adding them again with:"
1702+ \ way Elm." ++ ModuleName.toChars m ++ ".init() is definitely defined in the\
132− [ D.indent 4 $ D.green "elm install"
1703+ \ resulting file!"
1706+ "Try adding a `main` value to your file? Or if you just want to verify that this\
1707+ \ module compiles, switch to --output=/dev/null to skip the code gen phase\
1710+ "Adding a `main` value can be as brief as adding something like this:"
1712+ [ D.fillSep [D.cyan "import","Html"]
1714+ , D.fillSep [D.green "main","="]
1715+ , D.indent 2 $ D.fillSep [D.cyan "Html" <> ".text",D.dullyellow "\"Hello!\""]
133 , D.reflow $
1717 , D.reflow $
134− "And do not be afaid to ask for help on Slack if you get stuck!"
1718+ "Or use https://package.elm-lang.org/packages/elm/core/latest/Platform#worker to\
1719+ \ make a `main` with no user interface."
138− Help.report "OLD DEPENDENCIES" (Just "elm.json")
1723+ Help.report "NO MAIN" Nothing
139− ( "The following packages do not work with Elm " ++ Pkg.versionToString Compiler.version ++ " right now:"
1724+ (
1725+ "When producing a JS file, I require that given files all have `main` values.\
1726+ \ That way functions like Elm." ++ ModuleName.toChars m ++ ".init() are\
1727+ \ definitely defined in the resulting file. I am missing `main` values in:"
141− [ D.indent 4 $ D.vcat $ map (D.red . D.fromString . Pkg.toString) badPackages
1729+ [ D.indent 4 $ D.red $ D.vcat $ map D.fromName (m:ms)
142 , D.reflow $
1730 , D.reflow $
143− "This may be because it is not upgraded yet. It may be because a\
1731+ "Try adding a `main` value to them? Or if you just want to verify that these\
144− \ better solution came along, so there was no need to upgrade it.\
1732+ \ modules compile, switch to --output=/dev/null to skip the code gen phase\
145− \ Etc. Try asking around on Slack to learn more about the topic."
1733+ \ altogether."
146− , D.toSimpleNote
1734+ , D.toSimpleNote $
147− "Whatever the case, please be kind to the relevant package authors! Having\
1735+ "Adding a `main` value can be as brief as adding something like this:"
148− \ friendly interactions with users is great motivation, and conversely, getting\
1736+ , D.vcat
149− \ berated by strangers on the internet sucks your soul dry. Furthermore, package\
1737+ [ D.fillSep [D.cyan "import","Html"]
150− \ authors are humans with families, friends, jobs, vacations, responsibilities,\
1738+ , ""
151− \ goals, etc. They face obstacles outside of their technical work you will never\
1739+ , D.fillSep [D.green "main","="]
152− \ know about, so please assume the best and try to be patient and supportive!"
1740+ , D.indent 2 $ D.fillSep [D.cyan "Html" <> ".text",D.dullyellow "\"Hello!\""]
1743+ "Or use https://package.elm-lang.org/packages/elm/core/latest/Platform#worker to\
1744+ \ make a `main` with no user interface."
1747+ MakeCannotBuild buildProblem ->
1748+ toBuildProblemReport buildProblem
1750+ MakeBadGenerate generateProblem ->
1751+ toGenerateReport generateProblem
1759+ = BuildBadModules FilePath Error.Module [Error.Module]
1760+ | BuildProjectProblem BuildProjectProblem
1763+data BuildProjectProblem
1764+ = BP_PathUnknown FilePath
1765+ | BP_WithBadExtension FilePath
1766+ | BP_WithAmbiguousSrcDir FilePath FilePath FilePath
1767+ | BP_MainPathDuplicate FilePath FilePath
1768+ | BP_RootNameDuplicate ModuleName.Raw FilePath FilePath
1769+ | BP_RootNameInvalid FilePath FilePath [String]
1770+ | BP_CannotLoadDependencies
1771+ | BP_Cycle ModuleName.Raw [ModuleName.Raw]
1772+ | BP_MissingExposed (NE.List (ModuleName.Raw, Import.Problem))
1775+toBuildProblemReport :: BuildProblem -> Help.Report
1776+toBuildProblemReport problem =
1778+ BuildBadModules root e es ->
1779+ Help.compilerReport root e es
1781+ BuildProjectProblem projectProblem ->
1782+ toProjectProblemReport projectProblem
1785+toProjectProblemReport :: BuildProjectProblem -> Help.Report
1786+toProjectProblemReport projectProblem =
1787+ case projectProblem of
1788+ BP_PathUnknown path ->
1789+ Help.report "FILE NOT FOUND" Nothing
1790+ "I cannot find this file:"
1791+ [ D.indent 4 $ D.red $ D.fromChars path
1792+ , D.reflow $ "Is there a typo?"
1794+ "If you are just getting started, try working through the examples in the\
1795+ \ official guide https://guide.elm-lang.org to get an idea of the kinds of things\
1796+ \ that typically go in a src/Main.elm file."
1799+ BP_WithBadExtension path ->
1800+ Help.report "UNEXPECTED FILE EXTENSION" Nothing
1801+ "I can only compile Elm files (with a .elm extension) but you want me to compile:"
1802+ [ D.indent 4 $ D.red $ D.fromChars path
1803+ , D.reflow $ "Is there a typo? Can the file extension be changed?"
1806+ BP_WithAmbiguousSrcDir path srcDir1 srcDir2 ->
1807+ Help.report "CONFUSING FILE" Nothing
1808+ "I am getting confused when I try to compile this file:"
1809+ [ D.indent 4 $ D.red $ D.fromChars path
1811+ "I always check if files appear in any of the \"source-directories\" listed in\
1812+ \ your elm.json to see if there might be some cached information about them. That\
1813+ \ can help me compile faster! But in this case, it looks like this file may be in\
1814+ \ either of these directories:"
1815+ , D.indent 4 $ D.red $ D.vcat $ map D.fromChars [srcDir1,srcDir2]
1817+ "Try to make it so no source directory contains another source directory!"
1820+ BP_MainPathDuplicate path1 path2 ->
1821+ Help.report "CONFUSING FILES" Nothing
1822+ "You are telling me to compile these two files:"
1823+ [ D.indent 4 $ D.red $ D.vcat $ map D.fromChars [ path1, path2 ]
1825+ if path1 == path2 then
1826+ "Why are you telling me twice? Is something weird going on with a script?\
1827+ \ I figured I would let you know about it just in case something is wrong.\
1828+ \ Only list it once and you should be all set!"
1830+ "But seem to be the same file though... It makes me think something tricky is\
1831+ \ going on with symlinks in your project, so I figured I would let you know\
1832+ \ about it just in case. Remove one of these files from your command to get\
1836+ BP_RootNameDuplicate name outsidePath otherPath ->
1837+ Help.report "MODULE NAME CLASH" Nothing
1838+ "These two files are causing a module name clash:"
1839+ [ D.indent 4 $ D.red $ D.vcat $ map D.fromChars [ outsidePath, otherPath ]
1841+ "They both say `module " ++ ModuleName.toChars name ++ " exposing (..)` up\
1842+ \ at the top, but they cannot have the same name!"
1844+ "Try changing to a different module name in one of them!"
1847+ BP_RootNameInvalid givenPath srcDir _ ->
1848+ Help.report "UNEXPECTED FILE NAME" Nothing
1849+ "I am having trouble with this file name:"
1850+ [ D.indent 4 $ D.red $ D.fromChars givenPath
1852+ "I found it in your " ++ FP.addTrailingPathSeparator srcDir ++ " directory\
1853+ \ which is good, but I expect all of the files in there to use the following\
1854+ \ module naming convention:"
1855+ , toModuleNameConventionTable srcDir [ "Main", "HomePage", "Http.Helpers" ]
1857+ "Notice that the names always start with capital letters! Can you make your file\
1858+ \ use this naming convention?"
1860+ "Having a strict naming convention like this makes it a lot easier to find\
1861+ \ things in large projects. If you see a module imported, you know where to look\
1862+ \ for the corresponding file every time!"
1865+ BP_CannotLoadDependencies ->
1868+ BP_Cycle name names ->
1869+ Help.report "IMPORT CYCLE" Nothing
1870+ "Your module imports form a cycle:"
1871+ [ D.cycle 4 name names
1873+ "Learn more about why this is disallowed and how to break cycles here:"
1874+ ++ D.makeLink "import-cycles"
1877+ BP_MissingExposed (NE.List (name, problem) _) ->
1880+ Help.report "MISSING MODULE" (Just "elm.json")
1881+ "The \"exposed-modules\" of your elm.json lists the following module:"
1882+ [ D.indent 4 $ D.red $ D.fromName name
1884+ "But I cannot find it in your src/ directory. Is there a typo? Was it renamed?"
1887+ Import.Ambiguous _ _ pkg _ ->
1888+ Help.report "AMBIGUOUS MODULE NAME" (Just "elm.json")
1889+ "The \"exposed-modules\" of your elm.json lists the following module:"
1890+ [ D.indent 4 $ D.red $ D.fromName name
1892+ "But a module from " ++ Pkg.toChars pkg ++ " already uses that name. Try\
1893+ \ choosing a different name for your local file."
1896+ Import.AmbiguousLocal path1 path2 paths ->
1897+ Help.report "AMBIGUOUS MODULE NAME" (Just "elm.json")
1898+ "The \"exposed-modules\" of your elm.json lists the following module:"
1899+ [ D.indent 4 $ D.red $ D.fromName name
1901+ "But I found multiple files with that name:"
1902+ , D.dullyellow $ D.indent 4 $ D.vcat $
1903+ map D.fromChars (path1:path2:paths)
1905+ "Change the module names to be distinct!"
1908+ Import.AmbiguousForeign _ _ _ ->
1909+ Help.report "MISSING MODULE" (Just "elm.json")
1910+ "The \"exposed-modules\" of your elm.json lists the following module:"
1911+ [ D.indent 4 $ D.red $ D.fromName name
1913+ "But I cannot find it in your src/ directory. Is there a typo? Was it renamed?"
1915+ "It is not possible to \"re-export\" modules from other packages. You can only\
1916+ \ expose modules that you define in your own code."
1920+toModuleNameConventionTable :: FilePath -> [String] -> D.Doc
1921+toModuleNameConventionTable srcDir names =
1925+ , srcDir </> map (\c -> if c == '.' then FP.pathSeparator else c) name <.> "elm"
1928+ namePairs = map toPair names
1929+ nameWidth = maximum (11 : map (length . fst) namePairs)
1930+ pathWidth = maximum ( 9 : map (length . snd) namePairs)
1933+ str ++ replicate (width - length str) ' '
1935+ toRow (name, path) =
1937+ "| " ++ padded nameWidth name ++ " | " ++ padded pathWidth path ++ " |"
1941+ "+-" ++ replicate nameWidth '-' ++ "-+-" ++ replicate pathWidth '-' ++ "-+"
1943+ D.indent 4 $ D.vcat $
1944+ [ bar, toRow ("Module Name", "File Path"), bar ] ++ map toRow namePairs ++ [ bar ]
1952+ = GenerateCannotLoadArtifacts
1953+ | GenerateCannotOptimizeDebugValues ModuleName.Raw [ModuleName.Raw]
1956+toGenerateReport :: Generate -> Help.Report
1957+toGenerateReport problem =
1959+ GenerateCannotLoadArtifacts ->
1962+ GenerateCannotOptimizeDebugValues m ms ->
1963+ Help.report "DEBUG REMNANTS" Nothing
1964+ "There are uses of the `Debug` module in the following modules:"
1965+ [ D.indent 4 $ D.red $ D.vcat $ map (D.fromChars . ModuleName.toChars) (m:ms)
1966+ , D.reflow "But the --optimize flag only works if all `Debug` functions are removed!"
1968+ "The issue is that --optimize strips out info needed by `Debug` functions.\
1969+ \ Here are two examples:"
1970+ , D.indent 4 $ D.reflow $
1971+ "(1) It shortens record field names. This makes the generated JavaScript\
1972+ \ smaller, but `Debug.toString` cannot know the real field names anymore."
1973+ , D.indent 4 $ D.reflow $
1974+ "(2) Values like `type Height = Height Float` are unboxed. This reduces\
1975+ \ allocation, but it also means that `Debug.toString` cannot tell if it is\
1976+ \ looking at a `Height` or `Float` value."
1978+ "There are a few other cases like that, and it will be much worse once we start\
1979+ \ inlining code. That optimization could move `Debug.log` and `Debug.todo` calls,\
1980+ \ resulting in unpredictable behavior. I hope that clarifies why this restriction\
1989+corruptCacheReport :: Help.Report
1990+corruptCacheReport =
1991+ Help.report "CORRUPT CACHE" Nothing
1992+ "It looks like some of the information cached in elm-stuff/ has been corrupted."
1994+ "Try deleting your elm-stuff/ directory to get unstuck."
1996+ "This almost certainly means that a 3rd party tool (or editor plugin) is\
1997+ \ causing problems your the elm-stuff/ directory. Try disabling 3rd party tools\
1998+ \ one by one until you figure out which it is!"
2008+ | ReactorBadDetails Details
2009+ | ReactorBadBuild BuildProblem
2010+ | ReactorBadGenerate Generate
2013+reactorToReport :: Reactor -> Help.Report
2014+reactorToReport problem =
2016+ ReactorNoOutline ->
2017+ Help.report "NEW PROJECT?" Nothing
2018+ "Are you trying to start a new project? Try this command in the terminal:"
2019+ [ D.indent 4 $ D.green "elm init"
2020+ , D.reflow "It will help you get started!"
2023+ ReactorBadDetails details ->
2024+ toDetailsReport details
2026+ ReactorBadBuild buildProblem ->
2027+ toBuildProblemReport buildProblem
2029+ ReactorBadGenerate generate ->
2030+ toGenerateReport generate
2038+ = ReplBadDetails Details
2039+ | ReplBadInput BS.ByteString Error.Error
2040+ | ReplBadLocalDeps FilePath Error.Module [Error.Module]
2041+ | ReplProjectProblem BuildProjectProblem
2042+ | ReplBadGenerate Generate
2047+replToReport :: Repl -> Help.Report
2048+replToReport problem =
2050+ ReplBadDetails details ->
2051+ toDetailsReport details
2053+ ReplBadInput source err ->
2054+ Help.compilerReport "/" (Error.Module N.replModule "REPL" File.zeroTime source err) []
2056+ ReplBadLocalDeps root e es ->
2057+ Help.compilerReport root e es
2059+ ReplProjectProblem projectProblem ->
2060+ toProjectProblemReport projectProblem
2062+ ReplBadGenerate generate ->
2063+ toGenerateReport generate