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{ system, name ? "stdenv", preHook ? "", initialPath, gcc, shell
, extraAttrs ? {}, overrides ? (pkgs: {})
, # The `fetchurl' to use for downloading curl and its dependencies
# (see all-packages.nix).
fetchurlBoot
}:
let
lib = import ../../lib;
disallowUnfree = builtins.getEnv "HYDRA_DISALLOW_UNFREE" == "1";
stdenvGenerator = setupScript: rec {
# The stdenv that we are producing.
result =
derivation {
inherit system name;
builder = shell;
args = ["-e" ./builder.sh];
setup = setupScript;
inherit preHook initialPath gcc shell;
propagatedUserEnvPkgs = [gcc] ++
lib.filter lib.isDerivation initialPath;
}
// rec {
meta = {
description = "The default build environment for Unix packages in Nixpkgs";
};
# Add a utility function to produce derivations that use this
# stdenv and its shell.
mkDerivation = attrs:
if disallowUnfree && attrs.meta.license or "" == "unfree" then
throw "package ‘${attrs.name}’ has an unfree license, refusing to evaluate"
else
(derivation (
(removeAttrs attrs ["meta" "passthru" "crossAttrs"])
// (let
buildInputs = attrs.buildInputs or [];
buildNativeInputs = attrs.buildNativeInputs or [];
propagatedBuildInputs = attrs.propagatedBuildInputs or [];
propagatedBuildNativeInputs = attrs.propagatedBuildNativeInputs or [];
crossConfig = attrs.crossConfig or null;
in
{
builder = attrs.realBuilder or shell;
args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)];
stdenv = result;
system = result.system;
# Inputs built by the cross compiler.
buildInputs = lib.optionals (crossConfig != null) buildInputs;
propagatedBuildInputs = lib.optionals (crossConfig != null)
propagatedBuildInputs;
# Inputs built by the usual native compiler.
buildNativeInputs = buildNativeInputs ++ lib.optionals
(crossConfig == null) buildInputs;
propagatedBuildNativeInputs = propagatedBuildNativeInputs ++
lib.optionals (crossConfig == null) propagatedBuildInputs;
}))
)
# 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 = attrs.meta or {}; }
# Pass through extra attributes that are not inputs, but
# should be made available to Nix expressions using the
# derivation (e.g., in assertions).
// (attrs.passthru or {});
# Utility flags to test the type of platform.
isDarwin = result.system == "x86_64-darwin";
isLinux = result.system == "i686-linux"
|| result.system == "x86_64-linux"
|| result.system == "powerpc-linux"
|| result.system == "armv5tel-linux"
|| result.system == "armv7l-linux"
|| result.system == "mips64el-linux";
isGNU = result.system == "i686-gnu"; # GNU/Hurd
isGlibc = isGNU # useful for `stdenvNative'
|| isLinux
|| result.system == "x86_64-kfreebsd-gnu";
isSunOS = result.system == "i686-solaris"
|| result.system == "x86_64-solaris";
isCygwin = result.system == "i686-cygwin";
isFreeBSD = result.system == "i686-freebsd"
|| result.system == "x86_64-freebsd";
isOpenBSD = result.system == "i686-openbsd"
|| result.system == "x86_64-openbsd";
isBSD = result.system == "i686-freebsd"
|| result.system == "x86_64-freebsd"
|| result.system == "i686-openbsd"
|| result.system == "x86_64-openbsd";
isi686 = result.system == "i686-linux"
|| result.system == "i686-gnu"
|| result.system == "i686-freebsd"
|| result.system == "i686-openbsd"
|| result.system == "i386-sunos";
isx86_64 = result.system == "x86_64-linux"
|| result.system == "x86_64-darwin"
|| result.system == "x86_64-freebsd"
|| result.system == "x86_64-openbsd";
is64bit = result.system == "x86_64-linux"
|| result.system == "x86_64-darwin";
isMips = result.system == "mips-linux"
|| result.system == "mips64el-linux";
isArm = result.system == "armv5tel-linux"
|| result.system == "armv7l-linux";
# Utility function: allow stdenv to be easily regenerated with
# a different setup script. (See all-packages.nix for an
# example.)
regenerate = stdenvGenerator;
# For convenience, bring in the library functions in lib/ so
# packages don't have to do that themselves.
inherit lib;
inherit fetchurlBoot;
inherit overrides;
}
# 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;
}.result;
in stdenvGenerator ./setup.sh
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