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nixpkgs/pkgs/build-support/autonix/default.nix
2015-06-25 09:03:40 -05:00

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Nix

{ pkgs }:
let inherit (pkgs) bash coreutils findutils nix wget;
inherit (pkgs) callPackage fetchurl runCommand stdenv substituteAll writeText;
in
/* autonix is a collection of tools to automate packaging large collections
* of software, particularly KDE. It consists of three components:
* 1. a script (manifest) to download and hash the packages
* 2. a dependency scanner (autonix-deps) written in Haskell that examines
* the package sources and tries to guess their dependencies
* 3. a library of Nix routines (generateCollection) to generate Nix
* expressions from the output of the previous steps.
*/
let inherit (stdenv) lib; in
let
resolveDeps = scope: deps:
let resolve = dep:
let res = scope."${dep}" or [];
in if lib.isList res then res else [res];
in lib.concatMap resolve deps;
in rec {
/* Download the packages into the Nix store, compute their hashes,
* and generate a package manifest in ./manifest.nix.
*/
manifest =
let
script =
substituteAll
{
src = ./manifest.sh;
inherit bash coreutils findutils nix wget;
};
in
runCommand "autonix-manifest" {}
''
cp ${script} $out
chmod +x $out
'';
mkPackage = callPackage: defaultOverride: name: pkg: let drv =
{ mkDerivation, fetchurl, scope }:
mkDerivation (defaultOverride {
inherit (pkg) name;
src = fetchurl pkg.src;
buildInputs = resolveDeps scope pkg.buildInputs;
nativeBuildInputs = resolveDeps scope pkg.nativeBuildInputs;
propagatedBuildInputs = resolveDeps scope pkg.propagatedBuildInputs;
propagatedNativeBuildInputs =
resolveDeps scope pkg.propagatedNativeBuildInputs;
propagatedUserEnvPkgs = resolveDeps scope pkg.propagatedUserEnvPkgs;
enableParallelBuilding = true;
});
in callPackage drv {};
renameDeps = renames: lib.mapAttrs (name: pkg:
let breakCycles = lib.filter (dep: dep != name);
rename = dep: renames."${dep}" or dep;
in pkg // {
buildInputs = breakCycles (map rename pkg.buildInputs);
nativeBuildInputs = breakCycles (map rename pkg.nativeBuildInputs);
propagatedBuildInputs = breakCycles (map rename pkg.propagatedBuildInputs);
propagatedNativeBuildInputs =
breakCycles (map rename pkg.propagatedNativeBuildInputs);
propagatedUserEnvPkgs = breakCycles (map rename pkg.propagatedUserEnvPkgs);
});
propagateDeps = propagated: lib.mapAttrs (name: pkg:
let isPropagated = dep: lib.elem dep propagated;
isNotPropagated = dep: !(isPropagated dep);
in pkg // {
buildInputs = lib.filter isNotPropagated pkg.buildInputs;
nativeBuildInputs = lib.filter isNotPropagated pkg.nativeBuildInputs;
propagatedBuildInputs =
pkg.propagatedBuildInputs
++ lib.filter isPropagated pkg.buildInputs;
propagatedNativeBuildInputs =
pkg.propagatedNativeBuildInputs
++ lib.filter isPropagated pkg.nativeBuildInputs;
});
nativeDeps = native: lib.mapAttrs (name: pkg:
let isNative = dep: lib.elem dep native;
isNotNative = dep: !(isNative dep);
in pkg // {
buildInputs = lib.filter isNotNative pkg.buildInputs;
nativeBuildInputs =
pkg.nativeBuildInputs
++ lib.filter isNative pkg.buildInputs;
propagatedBuildInputs = lib.filter isNotNative pkg.propagatedBuildInputs;
propagatedNativeBuildInputs =
pkg.propagatedNativeBuildInputs
++ lib.filter isNative pkg.propagatedBuildInputs;
});
userEnvDeps = user: lib.mapAttrs (name: pkg:
let allDeps = with pkg; lib.concatLists [
buildInputs
nativeBuildInputs
propagatedBuildInputs
propagatedNativeBuildInputs
];
in assert (lib.isList allDeps); pkg // {
propagatedUserEnvPkgs = lib.filter (dep: lib.elem dep user) allDeps;
});
overrideDerivation = pkg: f: pkg.override (super: super // {
mkDerivation = drv: super.mkDerivation (drv // f drv);
});
extendDerivation = pkg: attrs:
let mergeAttrBy = lib.mergeAttrBy // {
propagatedNativeBuildInputs = a: b: a ++ b;
NIX_CFLAGS_COMPILE = a: b: "${a} ${b}";
cmakeFlags = a: b: a ++ b;
};
mergeAttrsByFunc = sets:
let merged = lib.foldl lib.mergeAttrByFunc { inherit mergeAttrBy; } sets;
in builtins.removeAttrs merged ["mergeAttrBy"];
in overrideDerivation pkg (drv: mergeAttrsByFunc [ drv attrs ]);
overrideScope = pkg: fnOrSet: pkg.override (super: super // {
scope = if builtins.isFunction fnOrSet
then super.scope // fnOrSet super.scope
else super.scope // fnOrSet;
});
}