forked from mirrors/nixpkgs
46 lines
1.1 KiB
Nix
46 lines
1.1 KiB
Nix
/* A set of aliases to be used in generated expressions.
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In case of ambiguity, this will pick a sensible default.
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This was initially based on cabal2nix's mapping.
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It'd be nice to generate this mapping, based on a set of derivations.
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It can not be fully automated, so it should be a expression or tool
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that makes suggestions about which pkg-config module names can be added.
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*/
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pkgs:
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let
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inherit (pkgs) lib;
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inherit (lib)
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all
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flip
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mapAttrs
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mapAttrsToList
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getAttrFromPath
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importJSON
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;
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data = importJSON ./pkg-config-data.json;
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inherit (data) modules;
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platform = pkgs.stdenv.hostPlatform;
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isSupported = moduleData:
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moduleData?supportedWhenPlatformAttrsEqual ->
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all (x: x) (
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mapAttrsToList
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(k: v: platform?${k} && platform.${k} == v)
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moduleData.supportedWhenPlatformAttrsEqual
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);
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modulePkgs = flip mapAttrs modules (_moduleName: moduleData:
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if moduleData?attrPath && isSupported moduleData then
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getAttrFromPath moduleData.attrPath pkgs
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else
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null
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);
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in
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modulePkgs
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