nixpkgs/pkgs/stdenv/generic/default.nix
John Ericson 773233ca77 top-level, stdenv: Make system and stdenv.system describe the hostPlatform.
Intuitively, one cares mainly about the host platform: Platforms differ
in meaningful ways but compilation is morally a pure process and
probably doesn't care, or those difference are already abstracted away.
@Dezgeg also empirically confirmed that > 95% of checks are indeed of
the host platform.

Yet these attributes in the old cross infrastructure were defined to be
the build platform, for expediency. And this was never before changed.
(For native builds build and host coincide, so it isn't clear what the
intention was.)

Fixing this doesn't affect native builds, since again they coincide. It
also doesn't affect cross builds of anything in Nixpkgs, as these are no
longer used. It could affect external cross builds, but I deem that
unlikely as anyone thinking about cross would use more explicit
attributes for clarity, all the more so because the rarity of inspecting
the build platform.
2018-09-06 08:33:51 -04:00

158 lines
5.3 KiB
Nix

let lib = import ../../../lib; in lib.makeOverridable (
{ name ? "stdenv", preHook ? "", initialPath, cc, shell
, allowedRequisites ? null, extraAttrs ? {}, overrides ? (self: super: {}), config
, # The `fetchurl' to use for downloading curl and its dependencies
# (see all-packages.nix).
fetchurlBoot
, setupScript ? ./setup.sh
, extraNativeBuildInputs ? []
, extraBuildInputs ? []
, __stdenvImpureHostDeps ? []
, __extraImpureHostDeps ? []
, stdenvSandboxProfile ? ""
, extraSandboxProfile ? ""
## Platform parameters
##
## The "build" "host" "target" terminology below comes from GNU Autotools. See
## its documentation for more information on what those words mean. Note that
## each should always be defined, even when not cross compiling.
##
## For purposes of bootstrapping, think of each stage as a "sliding window"
## over a list of platforms. Specifically, the host platform of the previous
## stage becomes the build platform of the current one, and likewise the
## target platform of the previous stage becomes the host platform of the
## current one.
##
, # The platform on which packages are built. Consists of `system`, a
# string (e.g.,`i686-linux') identifying the most import attributes of the
# build platform, and `platform` a set of other details.
buildPlatform
, # The platform on which packages run.
hostPlatform
, # The platform which build tools (especially compilers) build for in this stage,
targetPlatform
}:
let
defaultNativeBuildInputs = extraNativeBuildInputs ++
[ ../../build-support/setup-hooks/move-docs.sh
../../build-support/setup-hooks/compress-man-pages.sh
../../build-support/setup-hooks/strip.sh
../../build-support/setup-hooks/patch-shebangs.sh
]
# FIXME this on Darwin; see
# https://github.com/NixOS/nixpkgs/commit/94d164dd7#commitcomment-22030369
++ lib.optional hostPlatform.isLinux ../../build-support/setup-hooks/audit-tmpdir.sh
++ [
../../build-support/setup-hooks/multiple-outputs.sh
../../build-support/setup-hooks/move-sbin.sh
../../build-support/setup-hooks/move-lib64.sh
../../build-support/setup-hooks/set-source-date-epoch-to-latest.sh
cc
];
defaultBuildInputs = extraBuildInputs;
# The stdenv that we are producing.
stdenv =
derivation (
lib.optionalAttrs (allowedRequisites != null) {
allowedRequisites = allowedRequisites
++ defaultNativeBuildInputs ++ defaultBuildInputs;
}
// {
inherit name;
# Nix itself uses the `system` field of a derivation to decide where to
# build it. This is a bit confusing for cross compilation.
inherit (buildPlatform) system;
builder = shell;
args = ["-e" ./builder.sh];
setup = setupScript;
# We pretty much never need rpaths on Darwin, since all library path references
# are absolute unless we go out of our way to make them relative (like with CF)
# TODO: This really wants to be in stdenv/darwin but we don't have hostPlatform
# there (yet?) so it goes here until then.
preHook = preHook+ lib.optionalString buildPlatform.isDarwin ''
export NIX_BUILD_DONT_SET_RPATH=1
'' + lib.optionalString hostPlatform.isDarwin ''
export NIX_DONT_SET_RPATH=1
export NIX_NO_SELF_RPATH=1
''
# TODO this should be uncommented, but it causes stupid mass rebuilds. I
# think the best solution would just be to fixup linux RPATHs so we don't
# need to set `-rpath` anywhere.
# + lib.optionalString targetPlatform.isDarwin ''
# export NIX_TARGET_DONT_SET_RPATH=1
# ''
;
inherit initialPath shell
defaultNativeBuildInputs defaultBuildInputs;
}
// lib.optionalAttrs buildPlatform.isDarwin {
__sandboxProfile = stdenvSandboxProfile;
__impureHostDeps = __stdenvImpureHostDeps;
})
// rec {
meta = {
description = "The default build environment for Unix packages in Nixpkgs";
platforms = lib.platforms.all;
};
inherit buildPlatform hostPlatform targetPlatform;
inherit extraNativeBuildInputs extraBuildInputs
__extraImpureHostDeps extraSandboxProfile;
# Utility flags to test the type of platform.
inherit (hostPlatform)
isDarwin isLinux isSunOS isCygwin isFreeBSD isOpenBSD
isi686 isx86_64 is64bit isAarch32 isAarch64 isMips isBigEndian;
isArm = lib.warn
"`stdenv.isArm` is deprecated after 18.03. Please use `stdenv.isAarch32` instead"
hostPlatform.isAarch32;
# The derivation's `system` is `buildPlatform.system`.
inherit (buildPlatform) system;
# Whether we should run paxctl to pax-mark binaries.
needsPax = isLinux;
inherit (import ./make-derivation.nix {
inherit lib config stdenv;
}) mkDerivation;
# For convenience, bring in the library functions in lib/ so
# packages don't have to do that themselves.
inherit lib;
inherit fetchurlBoot;
inherit overrides;
inherit cc;
}
# 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;
in stdenv)