depot/third_party/nixpkgs/nixos/modules/config/ldso.nix

81 lines
2 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 ];
}