[nix] system wide channels & registry + gc

ejiek · Oct 30, 2023 · bfcca62 · bfcca62
1 parent e4fdc6e
commit bfcca62
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Showing 2 changed files with 34 additions and 4 deletions.
diff --git a/configuration.nix b/configuration.nix
@@ -1,6 +1,10 @@
 # configuration in this file is shared by all hosts
 
-{ pkgs, ... }: {
+{
+  inputs,
+  lib,
+  pkgs,
+  ... }: {
 
   users.users = {
     root = {
@@ -39,7 +43,24 @@
 
   boot.zfs.forceImportRoot = false;
 
-  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  nix = {
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 30d";
+    };
+
+    registry = lib.mapAttrs (_: value: { flake = value; }) inputs;
+
+    nixPath = lib.mapAttrsToList (key: value: "${key}=${value.to.path}") pkgs.config.nix.registry;
+
+    settings = {
+      experimental-features = [ "nix-command" "flakes" ];
+
+      keep-outputs = true;
+      keep-derivations = true;
+    };
+  };
 
   programs.git.enable = true;
 

diff --git a/flake.nix b/flake.nix
@@ -14,7 +14,13 @@
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
   };
 
-  outputs = { self, nixpkgs, home-manager, nixos-hardware, rust-overlay }:
+  outputs = { self
+            , nixpkgs
+            , home-manager
+            , nixos-hardware
+            , rust-overlay
+            , ...
+            } @ inputs:
     let
       mkHost = hostName: system:
         (({ my-config, zfs-root, pkgs, system, ... }:
@@ -57,7 +63,10 @@
               }
 
               # Shared config
-              (import ./configuration.nix { inherit pkgs; })
+              (import ./configuration.nix {
+                inherit pkgs inputs;
+                lib = nixpkgs.lib;
+              })
             ];
           })