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|
# Adapted from Nixpkgs.
{ config, lib, pkgs, pkgsPath, ... }:
with lib;
let
isConfig = x:
builtins.isAttrs x || builtins.isFunction x;
optCall = f: x:
if builtins.isFunction f
then f x
else f;
mergeConfig = lhs_: rhs_:
let
lhs = optCall lhs_ { inherit pkgs; };
rhs = optCall rhs_ { inherit pkgs; };
in
lhs // rhs //
optionalAttrs (lhs ? packageOverrides) {
packageOverrides = pkgs:
optCall lhs.packageOverrides pkgs //
optCall (attrByPath ["packageOverrides"] ({}) rhs) pkgs;
} //
optionalAttrs (lhs ? perlPackageOverrides) {
perlPackageOverrides = pkgs:
optCall lhs.perlPackageOverrides pkgs //
optCall (attrByPath ["perlPackageOverrides"] ({}) rhs) pkgs;
};
configType = mkOptionType {
name = "nixpkgs-config";
description = "nixpkgs config";
check = x:
let traceXIfNot = c:
if c x then true
else lib.traceSeqN 1 x false;
in traceXIfNot isConfig;
merge = args: fold (def: mergeConfig def.value) {};
};
overlayType = mkOptionType {
name = "nixpkgs-overlay";
description = "nixpkgs overlay";
check = builtins.isFunction;
merge = lib.mergeOneOption;
};
_pkgs = import pkgsPath (
filterAttrs (n: v: v != null) config.nixpkgs
);
in
{
options.nixpkgs = {
config = mkOption {
default = null;
example = { allowBroken = true; };
type = types.nullOr configType;
description = ''
The configuration of the Nix Packages collection. (For
details, see the Nixpkgs documentation.) It allows you to set
package configuration options.
</para><para>
If <literal>null</literal>, then configuration is taken from
the fallback location, for example,
<filename>~/.config/nixpkgs/config.nix</filename>.
</para><para>
Note, this option will not apply outside your Home Manager
configuration like when installing manually through
<command>nix-env</command>. If you want to apply it both
inside and outside Home Manager you can put it in a separate
file and include something like
<programlisting language="nix">
nixpkgs.config = import ./nixpkgs-config.nix;
xdg.configFile."nixpkgs/config.nix".source = ./nixpkgs-config.nix;
</programlisting>
in your Home Manager configuration.
'';
};
overlays = mkOption {
default = null;
example = literalExample
''
[ (self: super: {
openssh = super.openssh.override {
hpnSupport = true;
withKerberos = true;
kerberos = self.libkrb5;
};
};
) ]
'';
type = types.nullOr (types.listOf overlayType);
description = ''
List of overlays to use with the Nix Packages collection. (For
details, see the Nixpkgs documentation.) It allows you to
override packages globally. This is a function that takes as
an argument the <emphasis>original</emphasis> Nixpkgs. The
first argument should be used for finding dependencies, and
the second should be used for overriding recipes.
</para><para>
If <literal>null</literal>, then the overlays are taken from
the fallback location, for example,
<filename>~/.config/nixpkgs/overlays</filename>.
</para><para>
Like <varname>nixpkgs.config</varname> this option only
applies within the Home Manager configuration. See
<varname>nixpkgs.config</varname> for a suggested setup that
works both internally and externally.
'';
};
system = mkOption {
type = types.str;
example = "i686-linux";
internal = true;
description = ''
Specifies the Nix platform type for which the user environment
should be built. If unset, it defaults to the platform type of
your host system. Specifying this option is useful when doing
distributed multi-platform deployment, or when building
virtual machines.
'';
};
};
config = {
_module.args = {
pkgs = mkOverride modules.defaultPriority _pkgs;
pkgs_i686 =
if _pkgs.stdenv.isLinux && _pkgs.stdenv.hostPlatform.isx86
then _pkgs.pkgsi686Linux
else { };
};
};
}
|
