53 lines
1.9 KiB
Nix
53 lines
1.9 KiB
Nix
/*
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If user need access to more haskell package for building his
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diagrams, he simply has to pass these package through the
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extra packages function as follow in `config.nix`:
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~~~
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diagramBuilderWrapper.override {
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extraPackages = self : [myHaskellPackage];
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}
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~~~
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WARNING:
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Note that this solution works well but however, as this is a
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non-cabal derivation, user should be carefull to never put this
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package inside the listing passed as argument to `ghcWithPackages`
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as it will silently disregard the package. This silent disregard
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should be regarded as an issue for `ghcWithPackages`. It should
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rather raise an error instead when a non-cabal dirivation is
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directly passed to it. The alternative would have been to
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use a fake cabal file in order to make this a cabal derivation.
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*/
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{ stdenv, diagramsBuilder, ghcWithPackages, makeWrapper,
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extraPackages ? (self: []) }:
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let
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# Used same technique such as xmonad
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w = ghcWithPackages
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(self: [ diagramsBuilder ] ++ extraPackages self);
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wrappedGhc = w.override { ignoreCollisions = true; };
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in
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stdenv.mkDerivation {
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name = diagramsBuilder.name + "-wrapper";
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buildInputs = [ makeWrapper ];
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buildCommand = ''
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makeWrapper \
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"${diagramsBuilder}/bin/diagrams-builder-svg" "$out/bin/diagrams-builder-svg" \
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--set NIX_GHC ${wrappedGhc}/bin/ghc \
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--set NIX_GHC_LIBDIR ${wrappedGhc}/lib/ghc-${diagramsBuilder.ghc.version}
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makeWrapper \
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"${diagramsBuilder}/bin/diagrams-builder-cairo" "$out/bin/diagrams-builder-cairo" \
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--set NIX_GHC ${wrappedGhc}/bin/ghc \
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--set NIX_GHC_LIBDIR ${wrappedGhc}/lib/ghc-${diagramsBuilder.ghc.version}
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makeWrapper \
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"${diagramsBuilder}/bin/diagrams-builder-ps" "$out/bin/diagrams-builder-ps" \
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--set NIX_GHC ${wrappedGhc}/bin/ghc \
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--set NIX_GHC_LIBDIR ${wrappedGhc}/lib/ghc-${diagramsBuilder.ghc.version}
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'';
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preferLocalBuild = true;
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meta = diagramsBuilder.meta;
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}
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