nixpkgs/nixos/modules/config/ldso.nix
Artturin e0464e4788 treewide: replace stdenv.is with stdenv.hostPlatform.is
In preparation for the deprecation of `stdenv.isX`.

These shorthands are not conducive to cross-compilation because they
hide the platforms.

Darwin might get cross-compilation for which the continued usage of `stdenv.isDarwin` will get in the way

One example of why this is bad and especially affects compiler packages
https://www.github.com/NixOS/nixpkgs/pull/343059

There are too many files to go through manually but a treewide should
get users thinking when they see a `hostPlatform.isX` in a place where it
doesn't make sense.

```
fd --type f "\.nix" | xargs sd --fixed-strings "stdenv.is" "stdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "stdenv'.is" "stdenv'.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "clangStdenv.is" "clangStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "gccStdenv.is" "gccStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "stdenvNoCC.is" "stdenvNoCC.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "inherit (stdenv) is" "inherit (stdenv.hostPlatform) is"
fd --type f "\.nix" | xargs sd --fixed-strings "buildStdenv.is" "buildStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "effectiveStdenv.is" "effectiveStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "originalStdenv.is" "originalStdenv.hostPlatform.is"
```
2024-09-25 00:04:37 +03:00

59 lines
1.9 KiB
Nix

{ config, lib, pkgs, ... }:
let
inherit (lib) last splitString mkOption types optionals;
libDir = pkgs.stdenv.hostPlatform.libDir;
ldsoBasename = builtins.unsafeDiscardStringContext (last (splitString "/" pkgs.stdenv.cc.bintools.dynamicLinker));
# Hard-code to avoid creating another instance of nixpkgs. Also avoids eval errors in some cases.
libDir32 = "lib"; # pkgs.pkgsi686Linux.stdenv.hostPlatform.libDir
ldsoBasename32 = "ld-linux.so.2"; # last (splitString "/" pkgs.pkgsi686Linux.stdenv.cc.bintools.dynamicLinker)
in {
options = {
environment.ldso = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
The executable to link into the normal FHS location of the ELF loader.
'';
};
environment.ldso32 = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
The executable to link into the normal FHS location of the 32-bit ELF loader.
This currently only works on x86_64 architectures.
'';
};
};
config = {
assertions = [
{ assertion = isNull config.environment.ldso32 || pkgs.stdenv.hostPlatform.isx86_64;
message = "Option environment.ldso32 currently only works on x86_64.";
}
];
systemd.tmpfiles.rules = (
if isNull config.environment.ldso then [
"r /${libDir}/${ldsoBasename} - - - - -"
] else [
"d /${libDir} 0755 root root - -"
"L+ /${libDir}/${ldsoBasename} - - - - ${config.environment.ldso}"
]
) ++ optionals pkgs.stdenv.hostPlatform.isx86_64 (
if isNull config.environment.ldso32 then [
"r /${libDir32}/${ldsoBasename32} - - - - -"
] else [
"d /${libDir32} 0755 root root - -"
"L+ /${libDir32}/${ldsoBasename32} - - - - ${config.environment.ldso32}"
]
);
};
meta.maintainers = with lib.maintainers; [ tejing ];
}