nixpkgs/pkgs/stdenv/default.nix
John Ericson 39753f5360 top-level: Close over fewer arguments for stdenv stages
This makes the flow of data easier to understand. There's little downside
because the args in question are already inspected by the stdenvs.

cross-compiling in particular is simpler because we don't need to worry
about overriding the config closed over by `allPackages`.
2016-11-30 19:11:03 -05:00

67 lines
2.6 KiB
Nix

# This file defines the various standard build environments.
#
# On Linux systems, the standard build environment consists of
# Nix-built instances glibc and the `standard' Unix tools, i.e., the
# Posix utilities, the GNU C compiler, and so on. On other systems,
# we use the native C library.
{ # Args just for stdenvs' usage
lib, allPackages
# Args to pass on to `allPacakges` too
, system, platform, crossSystem, config
}:
let
# The native (i.e., impure) build environment. This one uses the
# tools installed on the system outside of the Nix environment,
# i.e., the stuff in /bin, /usr/bin, etc. This environment should
# be used with care, since many Nix packages will not build properly
# with it (e.g., because they require GNU Make).
inherit (import ./native { inherit system allPackages config; }) stdenvNative;
stdenvNativePkgs = allPackages {
inherit system platform crossSystem config;
allowCustomOverrides = false;
stdenv = stdenvNative;
noSysDirs = false;
};
# The Nix build environment.
stdenvNix = import ./nix {
inherit config lib;
stdenv = stdenvNative;
pkgs = stdenvNativePkgs;
};
inherit (import ./freebsd { inherit system allPackages platform config; }) stdenvFreeBSD;
# Linux standard environment.
inherit (import ./linux { inherit system allPackages platform config lib; }) stdenvLinux;
inherit (import ./darwin { inherit system allPackages platform config; }) stdenvDarwin;
inherit (import ./cross { inherit system allPackages platform crossSystem config lib; }) stdenvCross stdenvCrossiOS;
inherit (import ./custom { inherit system allPackages platform crossSystem config lib; }) stdenvCustom;
# Select the appropriate stdenv for the platform `system'.
in
if crossSystem != null then
if crossSystem.useiOSCross or false then stdenvCrossiOS
else stdenvCross else
if config ? replaceStdenv then stdenvCustom else
if system == "i686-linux" then stdenvLinux else
if system == "x86_64-linux" then stdenvLinux else
if system == "armv5tel-linux" then stdenvLinux else
if system == "armv6l-linux" then stdenvLinux else
if system == "armv7l-linux" then stdenvLinux else
if system == "mips64el-linux" then stdenvLinux else
if system == "powerpc-linux" then /* stdenvLinux */ stdenvNative else
if system == "x86_64-darwin" then stdenvDarwin else
if system == "x86_64-solaris" then stdenvNix else
if system == "i686-cygwin" then stdenvNative else
if system == "x86_64-cygwin" then stdenvNative else
if system == "x86_64-freebsd" then stdenvFreeBSD else
stdenvNative