82 lines
2.6 KiB
Nix
82 lines
2.6 KiB
Nix
{ stdenv, name, preHook ? null, postHook ? null, initialPath, gcc, shell
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, param1 ? "", param2 ? "", param3 ? "", param4 ? "", param5 ? ""
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, extraAttrs ? {}
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}:
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let {
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stdenvGenerator = setupScript: rec {
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# The stdenv that we are producing.
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result =
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stdenv.mkDerivation {
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inherit name;
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builder = ./builder.sh;
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substitute = ../../build-support/substitute/substitute.sh;
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setup = setupScript;
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inherit preHook postHook initialPath gcc shell;
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# TODO: make this more elegant.
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inherit param1 param2 param3 param4 param5;
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}
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// {
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# Add a utility function to produce derivations that use this
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# stdenv and its shell.
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mkDerivation = attrs:
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(derivation (
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(removeAttrs attrs ["meta" "passthru"])
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//
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{
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builder = if attrs ? realBuilder then attrs.realBuilder else shell;
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args = if attrs ? args then attrs.args else
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["-e" (if attrs ? builder then attrs.builder else ./default-builder.sh)];
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stdenv = result;
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system = result.system;
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})
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)
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# The meta attribute is passed in the resulting attribute set,
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# but it's not part of the actual derivation, i.e., it's not
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# passed to the builder and is not a dependency. But since we
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# include it in the result, it *is* available to nix-env for
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# queries.
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//
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{ meta = if attrs ? meta then attrs.meta else {}; }
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# Pass through extra attributes that are not inputs, but
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# should be made available to Nix expressions using the
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# derivation (e.g., in assertions).
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//
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(if attrs ? passthru then attrs.passthru else {});
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# Utility value: is this a Darwin system?
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isDarwin = result.system == "i686-darwin" || result.system == "powerpc-darwin";
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isLinux = result.system == "i686-linux"
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|| result.system == "x86_64-linux"
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|| result.system == "powerpc-linux";
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# Utility function: allow stdenv to be easily regenerated with
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# a different setup script. (See all-packages.nix for an
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# example.)
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regenerate = stdenvGenerator;
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}
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# Propagate any extra attributes. For instance, we use this to
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# "lift" packages like curl from the final stdenv for Linux to
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# all-packages.nix for that platform (meaning that it has a line
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# like curl = if stdenv ? curl then stdenv.curl else ...).
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// extraAttrs;
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}.result;
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body = stdenvGenerator ./setup.sh;
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}
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