37 lines
1.4 KiB
Nix
37 lines
1.4 KiB
Nix
|
self: super:
|
||
|
|
|
||
|
|
let
|
||
|
|
nixos = self.config.nixos or true;
|
||
|
|
useUnstable = self.config.useUnstable or true;
|
||
|
|
|
||
|
|
unstablePkgsExprs = if nixos
|
||
|
|
then builtins.fetchTarball "https://channels.nixos.org/nixos-unstable/nixexprs.tar.xz"
|
||
|
|
else builtins.fetchTarball "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz";
|
||
|
|
|
||
|
|
# Compiled nixpkgs expression eg expressions from a nix channel
|
||
|
|
nixpkgsVersion = builtins.concatStringsSep "." [
|
||
|
|
(builtins.readFile "${unstablePkgsExprs}/.version")
|
||
|
|
(builtins.readFile "${unstablePkgsExprs}/.version-suffix")
|
||
|
|
];
|
||
|
|
|
||
|
|
nixpkgsRevision = (builtins.readFile "${unstablePkgsExprs}/.git-revision");
|
||
|
|
unstablePkgsForNixpkgs = nixpkgs: import unstablePkgsExprs {
|
||
|
|
# localSystem -> pkgs.stdenv.hostPlatform or pkgs.stdenv.hostPlatform ???
|
||
|
|
localSystem = nixpkgs.stdenv.hostPlatform;
|
||
|
|
# crossSystem -> nixpkgs.stdenv.targetPlatform
|
||
|
|
crossSystem = nixpkgs.stdenv.targetPlatform;
|
||
|
|
# config -> pkgs.config
|
||
|
|
config = nixpkgs.config;
|
||
|
|
# overlays -> partial of pkgs.overlays
|
||
|
|
overlays = nixpkgs.overlays;
|
||
|
|
# crossOverlays -> partial of pkgs.overlays
|
||
|
|
# crossOverlays are merged to overlays, not sure what issues that might raise.
|
||
|
|
# ignoring.
|
||
|
|
};
|
||
|
|
in
|
||
|
|
{
|
||
|
|
unstable = if useUnstable then unstablePkgsForNixpkgs self else self;
|
||
|
|
unstableVersion = self.lib.optionalString useUnstable nixpkgsVersion;
|
||
|
|
unstableRevision = self.lib.optionalString useUnstable nixpkgsRevision;
|
||
|
|
}
|