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{ 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.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} - - - - ${config.environment.ldso}"
]
) ++ optionals pkgs.stdenv.isx86_64 (
if isNull config.environment.ldso32 then [
"r /${libDir32}/${ldsoBasename32} - - - - -"
] else [
"d /${libDir32} 0755 root root - -"
"L+ /${libDir32}/${ldsoBasename32} - - - - ${config.environment.ldso32}"
]
);
};
meta.maintainers = with lib.maintainers; [ tejing ];
}
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