nixpkgs/pkgs/stdenv/native/default.nix
sternenseemann 0198f43efb stdenv: consistently use self: super: … for bootstrapping overlays
As of late, `final: prev: …` for overlays has become more prevalent in
newer code. This is also exhibited in some code (presumably added
recently) in stdenv. This change is not about any merits or demerits of
any naming convention, but rather aims to make the nomenclature in
stdenv bootstrapping consistent to lessen confusion.

I've chosen to stick to `self: super: …` convention because:

1. It is more common in the code as it stands.

2. Using `final: prev: …` makes the code more confusing, als it causes
   `prev` to be in scope alongside `prevStage`. `prevStage` actually
   bears no relation to `prev` even though their naming suggests it,
   making it easy to confuse them (the former is the (final) package set
   of the previous stage while the latter is just the `prev`/`super` of
   the overlay “chaining” on a completely fresh package set, i.e. `prev`
   doesn't even relate to the previous stage's `overrides` argument).

This change also corrects a naming error in stdenv/native which had no
effect, as the variables were unused.
2024-04-15 12:53:13 +02:00

174 lines
4.4 KiB
Nix
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

{ lib
, localSystem, crossSystem, config, overlays, crossOverlays ? []
}:
assert crossSystem == localSystem;
let
inherit (localSystem) system;
shell =
if system == "i686-freebsd" || system == "x86_64-freebsd" then "/usr/local/bin/bash"
else "/bin/bash";
path =
(lib.optionals (system == "i686-solaris") [ "/usr/gnu" ]) ++
(lib.optionals (system == "i686-netbsd") [ "/usr/pkg" ]) ++
(lib.optionals (system == "x86_64-solaris") [ "/opt/local/gnu" ]) ++
["/" "/usr" "/usr/local"];
prehookBase = ''
# Disable purity tests; it's allowed (even needed) to link to
# libraries outside the Nix store (like the C library).
export NIX_ENFORCE_PURITY=
export NIX_ENFORCE_NO_NATIVE="''${NIX_ENFORCE_NO_NATIVE-1}"
'';
prehookFreeBSD = ''
${prehookBase}
alias make=gmake
alias tar=gtar
alias sed=gsed
export MAKE=gmake
shopt -s expand_aliases
'';
prehookOpenBSD = ''
${prehookBase}
alias make=gmake
alias grep=ggrep
alias mv=gmv
alias ln=gln
alias sed=gsed
alias tar=gtar
export MAKE=gmake
shopt -s expand_aliases
'';
prehookNetBSD = ''
${prehookBase}
alias make=gmake
alias sed=gsed
alias tar=gtar
export MAKE=gmake
shopt -s expand_aliases
'';
# prevent libtool from failing to find dynamic libraries
prehookCygwin = ''
${prehookBase}
shopt -s expand_aliases
export lt_cv_deplibs_check_method=pass_all
'';
extraNativeBuildInputsCygwin = [
../cygwin/all-buildinputs-as-runtimedep.sh
../cygwin/wrap-exes-to-find-dlls.sh
] ++ (if system == "i686-cygwin" then [
../cygwin/rebase-i686.sh
] else if system == "x86_64-cygwin" then [
../cygwin/rebase-x86_64.sh
] else []);
# A function that builds a "native" stdenv (one that uses tools in
# /usr etc.).
makeStdenv =
{ cc, fetchurl, extraPath ? [], overrides ? (self: super: { }), extraNativeBuildInputs ? [] }:
import ../generic {
buildPlatform = localSystem;
hostPlatform = localSystem;
targetPlatform = localSystem;
preHook =
if system == "i686-freebsd" then prehookFreeBSD else
if system == "x86_64-freebsd" then prehookFreeBSD else
if system == "i686-openbsd" then prehookOpenBSD else
if system == "i686-netbsd" then prehookNetBSD else
if system == "i686-cygwin" then prehookCygwin else
if system == "x86_64-cygwin" then prehookCygwin else
prehookBase;
extraNativeBuildInputs = extraNativeBuildInputs ++
(if system == "i686-cygwin" then extraNativeBuildInputsCygwin else
if system == "x86_64-cygwin" then extraNativeBuildInputsCygwin else
[]);
initialPath = extraPath ++ path;
fetchurlBoot = fetchurl;
inherit shell cc overrides config;
};
in
[
({}: rec {
__raw = true;
stdenv = makeStdenv {
cc = null;
fetchurl = null;
};
stdenvNoCC = stdenv;
cc = let
nativePrefix = { # switch
i686-solaris = "/usr/gnu";
x86_64-solaris = "/opt/local/gcc47";
}.${system} or "/usr";
in
import ../../build-support/cc-wrapper {
name = "cc-native";
nativeTools = true;
nativeLibc = true;
inherit lib nativePrefix;
bintools = import ../../build-support/bintools-wrapper {
name = "bintools";
inherit lib stdenvNoCC nativePrefix;
nativeTools = true;
nativeLibc = true;
};
inherit stdenvNoCC;
};
fetchurl = import ../../build-support/fetchurl {
inherit lib stdenvNoCC;
# Curl should be in /usr/bin or so.
curl = null;
};
})
# First build a stdenv based only on tools outside the store.
(prevStage: {
inherit config overlays;
stdenv = makeStdenv {
inherit (prevStage) cc fetchurl;
overrides = self: super: { inherit (prevStage) fetchurl; };
} // {
inherit (prevStage) fetchurl;
};
})
# Using that, build a stdenv that adds the xz command (which most systems
# don't have, so we mustn't rely on the native environment providing it).
(prevStage: {
inherit config overlays;
stdenv = makeStdenv {
inherit (prevStage.stdenv) cc fetchurl;
extraPath = [ prevStage.xz ];
overrides = self: super: { inherit (prevStage) fetchurl xz; };
extraNativeBuildInputs = if localSystem.isLinux then [ prevStage.patchelf ] else [];
};
})
]