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95 lines
3.5 KiB
Nix
95 lines
3.5 KiB
Nix
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# Builder for Agda packages. Mostly inspired by the cabal builder.
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#
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# Contact: stdenv.lib.maintainers.fuuzetsu
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{ stdenv, Agda, glibcLocales
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, writeScriptBin
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, extension ? (self: super: {})
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}:
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let
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optionalString = stdenv.lib.optionalString;
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filter = stdenv.lib.filter;
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concatMapStringsSep = stdenv.lib.strings.concatMapStringsSep;
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concatMapStrings = stdenv.lib.strings.concatMapStrings;
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unwords = stdenv.lib.strings.concatStringsSep " ";
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mapInside = xs: unwords (map (x: x + "/*") xs);
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in
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{ mkDerivation = args:
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let
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postprocess = x: x // {
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sourceDirectories = filter (y: !(y == null)) x.sourceDirectories;
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propagatedBuildInputs = filter (y : ! (y == null)) x.propagatedBuildInputs;
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propagatedUserEnvPkgs = filter (y : ! (y == null)) x.propagatedUserEnvPkgs;
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extraBuildFlags = filter (y : ! (y == null)) x.extraBuildFlags;
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everythingFile = if x.everythingFile == "" then "Everything.agda" else x.everythingFile;
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};
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defaults = self : {
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# There is no Hackage for Agda so we require src.
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inherit (self) src name;
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buildInputs = [ Agda ] ++ self.buildDepends;
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buildDepends = [];
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# Not much choice here ;)
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LANG = "en_US.UTF-8";
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LOCALE_ARCHIVE = optionalString stdenv.isLinux "${glibcLocales}/lib/locale/locale-archive";
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everythingFile = "Everything.agda";
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propagatedBuildInputs = self.buildDepends ++ self.buildTools;
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propagatedUserEnvPkgs = self.buildDepends;
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# Immediate source directories under which modules can be found.
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sourceDirectories = [ ];
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# This is used if we have a top-level element that only serves
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# as the container for the source and we only care about its
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# contents. The directories put here will have their
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# *contents* copied over as opposed to sourceDirectories which
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# would make a direct copy of the whole thing.
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topSourceDirectories = [ "src" ];
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buildTools = [];
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# Extra stuff to pass to the Agda binary.
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extraBuildFlags = [ "-i ." ];
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buildFlags = let r = map (x: "-i " + x + "/share/agda") self.buildDepends;
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d = map (x : "-i " + x) (self.sourceDirectories ++ self.topSourceDirectories);
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in unwords (r ++ d ++ self.extraBuildFlags);
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# We expose this as a mere convenience for any tools.
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AGDA_PACKAGE_PATH = concatMapStrings (x: x + ":") self.buildDepends;
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# Makes a wrapper available to the user. Very useful in
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# nix-shell where all dependencies are -i'd.
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agdaWrapper = writeScriptBin "agda" ''
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${Agda}/bin/agda ${self.buildFlags} "$@"
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'';
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# configurePhase is idempotent
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configurePhase = ''
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eval "$preConfigure"
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export AGDA_PACKAGE_PATH=${self.AGDA_PACKAGE_PATH};
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export PATH="${self.agdaWrapper}/bin:$PATH"
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eval "$postConfigure"
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'';
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buildPhase = ''
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eval "$preBuild"
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${Agda}/bin/agda ${self.buildFlags} ${self.everythingFile}
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eval "$postBuild"
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'';
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installPhase = ''
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eval "$preInstall"
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mkdir -p $out/share/agda
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cp -pR ${unwords self.sourceDirectories} ${mapInside self.topSourceDirectories} $out/share/agda
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eval "$postInstall"
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'';
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};
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in stdenv.mkDerivation
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(postprocess (let super = defaults self // args self;
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self = super // extension self super;
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in self));
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}
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