nixpkgs/pkgs/stdenv/generic/default.nix
Eelco Dolstra baec8f5b38 * stdenv.mkDerivation now takes an optional attribute "meta" that
contains arbitrary information about a package, like this:

  meta = {
    homepage = "http://gcc.gnu.org/";
    license = "GPL/LGPL";
    description = "GNU Compiler Collection, 4.0.x";
  };

  The "meta" attribute is not passed to the actual derivation
  operation, so it's not a dependency --- changes to "meta" attributes
  don't trigger a recompilation.

  Now we have to standardise some useful attributes ;-)

svn path=/nixpkgs/branches/usability/; revision=5024
2006-03-10 16:12:46 +00:00

58 lines
1.7 KiB
Nix

{ stdenv, name, preHook ? null, postHook ? null, initialPath, gcc, shell
, param1 ? "", param2 ? "", param3 ? "", param4 ? "", param5 ? ""
, extraAttrs ? {}
}:
let {
body =
stdenv.mkDerivation {
inherit name;
builder = ./builder.sh;
substitute = ../../build-support/substitute/substitute.sh;
setup = ./setup.sh;
inherit preHook postHook initialPath gcc shell;
# TODO: make this more elegant.
inherit param1 param2 param3 param4 param5;
}
# Add a utility function to produce derivations that use this
# stdenv and its shell.
// {
mkDerivation = attrs:
(derivation (
(removeAttrs attrs ["meta"])
//
{
builder = if attrs ? realBuilder then attrs.realBuilder else shell;
args = if attrs ? args then attrs.args else
["-e" (if attrs ? builder then attrs.builder else ./default-builder.sh)];
stdenv = body;
system = body.system;
})
)
//
# The meta attribute is passed in the resulting attribute set,
# but it's not part of the actual derivation, i.e., it's not
# passed to the builder and is not a dependency. But since we
# include it in the result, it *is* available to nix-env for
# queries.
{ meta = if attrs ? meta then attrs.meta else {}; };
}
# Propagate any extra attributes. For instance, we use this to
# "lift" packages like curl from the final stdenv for Linux to
# all-packages.nix for that platform (meaning that it has a line
# like curl = if stdenv ? curl then stdenv.curl else ...).
// extraAttrs;
}