@@ -1,2069 +0,0 @@
1−{-# LANGUAGE OverloadedStrings #-}
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(..)
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
45−import qualified Elm.Magnitude as M
46−import qualified Elm.ModuleName as ModuleName
47−import qualified Elm.Package as Pkg
48−import qualified Elm.Version as V
51−import qualified Json.Decode as Decode
52−import 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 ((<>))
57−import qualified Reporting.Doc as D
58−import qualified Reporting.Error.Import as Import
59−import qualified Reporting.Error.Json as Json
60−import qualified Reporting.Exit.Help as Help
61−import qualified Reporting.Error as Error
62−import qualified Reporting.Render.Code as Code
69−toString :: Help.Report -> String
71− Help.toString (Help.reportToDoc report)
74−toStderr :: Help.Report -> IO ()
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?"
695− = DP_Http Http.Error
696− | DP_Data String BS.ByteString
700−toDocsProblemReport :: DocsProblem -> String -> Help.Report
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 =
757− Help.report "NEW PROJECT?" Nothing
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."
1284− ["Did","you","change","them","by","hand?","Try","to","change","it","back!"
1285− ,"It","is","much","more","reliable","to","add","dependencies","with",D.green "elm install" <> "."
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
1314− [ "But", "you", "are", "using", "Elm"
1315− , D.red (D.fromVersion V.compiler)
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" <> "."
1341− "Please ask for help on the community forums if you try those paths and are still\
1342− \ having problems!"
1345− DetailsBadOutline outline ->
1346− toOutlineReport outline
1348− DetailsCannotGetRegistry problem ->
1349− toRegistryProblemReport "PROBLEM LOADING PACKAGE LIST" problem $
1350− "I need the list of published packages to verify your dependencies"
1352− DetailsBadDeps cacheDir deps ->
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!"
1368− BD_BadDownload pkg vsn packageProblem ->
1369− toPackageProblemReport pkg vsn packageProblem
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 ->
1424− Help.report "PROBLEM DOWNLOADING PACKAGE" Nothing
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
1430− "Is something weird with your internet connection. We have gotten reports that\
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?"
1435− PP_BadArchiveRequest httpError ->
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."
1474−data RegistryProblem
1475− = RP_Http Http.Error
1476− | RP_Data String BS.ByteString
1479−toRegistryProblemReport :: String -> RegistryProblem -> String -> Help.Report
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 ->
1699− Help.report "NO MAIN" Nothing
1701− "When producing a JS file, I require that the given file has a `main` value. That\
1702− \ way Elm." ++ ModuleName.toChars m ++ ".init() is definitely defined in the\
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!\""]
1718− "Or use https://package.elm-lang.org/packages/elm/core/latest/Platform#worker to\
1719− \ make a `main` with no user interface."
1723− Help.report "NO MAIN" Nothing
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:"
1729− [ D.indent 4 $ D.red $ D.vcat $ map D.fromName (m:ms)
1731− "Try adding a `main` value to them? Or if you just want to verify that these\
1732− \ modules compile, switch to --output=/dev/null to skip the code gen phase\
1735− "Adding a `main` value can be as brief as adding something like this:"
1737− [ D.fillSep [D.cyan "import","Html"]
1739− , D.fillSep [D.green "main","="]
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