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https://github.com/nix-community/dream2nix.git
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remove lib.nix
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DavHau
parent
f7c034d4ee
commit
0593d9d931
262
src/lib.nix
262
src/lib.nix
@ -1,262 +0,0 @@
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# like ./default.nix but system intependent
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# (allows to generate outputs for several systems)
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# follows flake output schema
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{
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dlib,
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nixpkgsSrc,
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lib,
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overridesDirs,
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externalSources,
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externalPaths,
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} @ args: let
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b = builtins;
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l = lib // builtins;
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dream2nixForSystem = config: system: pkgs:
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import ./default.nix
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{inherit config externalPaths externalSources pkgs;};
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# TODO: design output schema for cross compiled packages
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makePkgsKey = pkgs: let
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build = pkgs.buildPlatform.system;
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host = pkgs.hostPlatform.system;
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in
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if build == host
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then build
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else throw "cross compiling currently not supported";
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makeNixpkgs = pkgsList: systems:
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# fail if neither pkgs nor systems are defined
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if pkgsList == null && systems == []
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then throw "Either `systems` or `pkgs` must be defined"
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# fail if pkgs and systems are both defined
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else if pkgsList != null && systems != []
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then throw "Define either `systems` or `pkgs`, not both"
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# only pkgs is specified
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else if pkgsList != null
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then
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if b.isList pkgsList
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then
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lib.listToAttrs
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(pkgs: lib.nameValuePair (makePkgsKey pkgs) pkgs)
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pkgsList
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else {"${makePkgsKey pkgsList}" = pkgsList;}
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# only systems is specified
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else
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lib.genAttrs systems
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(system: import nixpkgsSrc {inherit system;});
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flakifyBuilderOutputs = system: outputs:
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(lib.optionalAttrs (outputs ? "defaultPackage") {
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defaultPackage."${system}" = outputs.defaultPackage;
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})
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// (lib.optionalAttrs (outputs ? "packages") {
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packages."${system}" = outputs.packages;
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})
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// (lib.optionalAttrs (outputs ? "devShell") {
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devShell."${system}" = outputs.devShell;
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});
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init = {
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pkgs ? null,
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systems ? [],
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config ? {},
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} @ argsInit: let
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config' = (import ./utils/config.nix).loadConfig argsInit.config or {};
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config =
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config'
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// {
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overridesDirs = args.overridesDirs ++ config'.overridesDirs;
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};
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allPkgs = makeNixpkgs pkgs systems;
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forAllSystems = f: lib.mapAttrs f allPkgs;
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dream2nixFor = forAllSystems (dream2nixForSystem config);
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in {
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riseAndShine = throw "Use makeFlakeOutputs instead of riseAndShine.";
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makeFlakeOutputs = mArgs:
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makeFlakeOutputsFunc
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(
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{inherit config pkgs systems;}
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// mArgs
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);
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apps =
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forAllSystems
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(system: pkgs:
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dream2nixFor."${system}".apps.flakeApps);
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defaultApp =
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forAllSystems
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(system: pkgs:
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dream2nixFor."${system}".apps.flakeApps.dream2nix);
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builders =
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forAllSystems
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(system: pkgs:
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dream2nixFor."${system}".builders);
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};
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makeFlakeOutputsFunc = {
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builder ? null,
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pname ? null,
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pkgs ? null,
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source,
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systems ? [],
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translator ? null,
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translatorArgs ? {},
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...
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} @ args: let
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config = args.config or ((import ./utils/config.nix).loadConfig {});
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argsForward = b.removeAttrs args ["config" "pname" "pkgs" "systems"];
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allPkgs = makeNixpkgs pkgs systems;
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forAllSystems = f: b.mapAttrs f allPkgs;
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dream2nixFor = forAllSystems (dream2nixForSystem config);
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translatorFound = dlib.translators.findOneTranslator {
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inherit source;
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translatorName = args.translator or null;
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};
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translatorFoundFor = forAllSystems (
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system: pkgs:
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with translatorFound;
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dream2nixFor
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."${system}"
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.translators
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.translators
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."${subsystem}"
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."${type}"
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."${name}"
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);
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invalidationHash = dlib.calcInvalidationHash {
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inherit source translatorArgs;
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translator = translatorFound.name;
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};
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specifyPnameError = throw ''
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Translator `${translatorFound.name}` could not automatically determine `pname`.
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Please specify `pname` when calling `makeFlakeOutputs`
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'';
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detectedName = translatorFound.projectName;
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pname =
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if args.pname or null != null
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then args.pname
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else if detectedName != null
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then detectedName
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else specifyPnameError;
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allBuilderOutputs =
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lib.mapAttrs
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(system: pkgs: let
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dream2nix = dream2nixFor."${system}";
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dreamLockJsonPath = with config; "${projectRoot}/${packagesDir}/${pname}/dream-lock.json";
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dreamLock = dream2nix.utils.readDreamLock {
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dreamLock = dreamLockJsonPath;
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};
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dreamLockExistsAndValid =
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b.pathExists dreamLockJsonPath
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&& dreamLock.lock._generic.invalidationHash or "" == invalidationHash;
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result = translator: args:
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dream2nix.makeOutputs (argsForward
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// {
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# TODO: this triggers the translator finding routine a second time
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translator = translatorFound.name;
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});
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in
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if dreamLockExistsAndValid
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then
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# we need to override the source here as it is coming from
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# a flake input
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let
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defaultPackage = dreamLock.lock._generic.defaultPackage;
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defaultPackageVersion =
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dreamLock.lock._generic.packages."${defaultPackage}";
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in
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result translatorFound {
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source = dreamLockJsonPath;
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sourceOverrides = oldSources: {
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"${defaultPackage}"."${defaultPackageVersion}" =
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args.source;
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};
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}
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else if b.elem translatorFound.type ["pure" "ifd"]
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then
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# warn the user about potentially slow on-the-fly evaluation
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b.trace ''
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${"\n"}
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The dream-lock.json for input '${pname}' doesn't exist or is outdated.
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...Falling back to on-the-fly evaluation (possibly slow).
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To speed up future evalutations run once:
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nix run .#resolve
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''
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result
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translatorFound {}
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else
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# print error because impure translation is required first.
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# continue the evaluation anyways, as otherwise we won't have
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# the `resolve` app
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b.trace ''
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${"\n"}
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ERROR:
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Some information is missing to build this project reproducibly.
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Please execute nix run .#resolve to resolve all impurities.
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''
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{})
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allPkgs;
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flakifiedOutputsList =
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lib.mapAttrsToList
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(system: outputs: flakifyBuilderOutputs system outputs)
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allBuilderOutputs;
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flakeOutputs =
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b.foldl'
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(allOutputs: output: lib.recursiveUpdate allOutputs output)
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{}
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flakifiedOutputsList;
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in
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lib.recursiveUpdate
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flakeOutputs
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{
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apps = forAllSystems (system: pkgs: {
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resolve.type = "app";
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resolve.program = let
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utils = dream2nixFor."${system}".utils;
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# TODO: Too many calls to findOneTranslator.
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# -> make findOneTranslator system independent
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translatorFound = dream2nixFor."${system}".translators.findOneTranslator {
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inherit source;
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translatorName = args.translator or null;
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};
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in
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b.toString
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(utils.makePackageLockScript {
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inherit source translatorArgs;
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packagesDir = config.packagesDir;
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translator = translatorFound.name;
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});
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});
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};
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in {
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inherit dlib init;
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riseAndShine = throw "Use makeFlakeOutputs instead of riseAndShine.";
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makeFlakeOutputs = makeFlakeOutputsFunc;
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}
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