From e2e2c2a7573ae83456529742a42304ad96076896 Mon Sep 17 00:00:00 2001
From: oddlama <oddlama@oddlama.org>
Date: Mon, 1 May 2023 14:42:36 +0200
Subject: [PATCH] chore: auto optimize biweekly; delete generations older than
 90d; use single-definition for stateVersion

---
 flake.nix                         |  2 ++
 hosts/common/core/nix.nix         | 11 +++++++----
 hosts/common/dev/default.nix      |  5 ++++-
 hosts/common/dev/nix.nix          |  6 ++++++
 hosts/common/dev/virt-manager.nix | 18 ------------------
 nix/generate-installer.nix        |  2 +-
 nix/generate-node.nix             |  2 +-
 users/common/default.nix          |  2 +-
 8 files changed, 22 insertions(+), 26 deletions(-)
 create mode 100644 hosts/common/dev/nix.nix
 delete mode 100644 hosts/common/dev/virt-manager.nix

diff --git a/flake.nix b/flake.nix
index 189d14d..8cf7358 100644
--- a/flake.nix
+++ b/flake.nix
@@ -86,6 +86,8 @@
         content = import ./nix/secrets.nix inputs;
       };
 
+      stateVersion = "23.05";
+
       hosts = {
         nom = {
           type = "nixos";
diff --git a/hosts/common/core/nix.nix b/hosts/common/core/nix.nix
index 1b097a4..f21905e 100644
--- a/hosts/common/core/nix.nix
+++ b/hosts/common/core/nix.nix
@@ -1,6 +1,7 @@
 {
   inputs,
   pkgs,
+  stateVersion,
   ...
 }: {
   environment.etc."nixos/configuration.nix".source = pkgs.writeText "configuration.nix" ''
@@ -32,12 +33,14 @@
       builders-use-substitutes = true
       experimental-features = nix-command flakes recursive-nix
       flake-registry = /etc/nix/registry.json
-      plugin-files = ${pkgs.nix-plugins}/lib/nix/plugins
-      extra-builtins-file = ${../../../nix/extra-builtins.nix}
     '';
     nixPath = ["nixpkgs=/run/current-system/nixpkgs"];
     optimise.automatic = true;
-    gc.automatic = true;
+    gc = {
+      automatic = true;
+      dates = "biweekly";
+      options = "--delete-older-than 90d";
+    };
     # Define global flakes for this system
     registry = {
       nixpkgs.flake = inputs.nixpkgs;
@@ -51,6 +54,6 @@
     extraSystemBuilderCmds = ''
       ln -sv ${pkgs.path} $out/nixpkgs
     '';
-    stateVersion = "23.05";
+    inherit stateVersion;
   };
 }
diff --git a/hosts/common/dev/default.nix b/hosts/common/dev/default.nix
index 232ddf4..292096a 100644
--- a/hosts/common/dev/default.nix
+++ b/hosts/common/dev/default.nix
@@ -1,5 +1,8 @@
 {
-  imports = [./documentation.nix];
+  imports = [
+    ./documentation.nix
+    ./nix.nix
+  ];
 
   environment.enableDebugInfo = true;
 }
diff --git a/hosts/common/dev/nix.nix b/hosts/common/dev/nix.nix
new file mode 100644
index 0000000..4798628
--- /dev/null
+++ b/hosts/common/dev/nix.nix
@@ -0,0 +1,6 @@
+{pkgs, ...}: {
+  nix.extraOptions = ''
+    plugin-files = ${pkgs.nix-plugins}/lib/nix/plugins
+    extra-builtins-file = ${../../../nix/extra-builtins.nix}
+  '';
+}
diff --git a/hosts/common/dev/virt-manager.nix b/hosts/common/dev/virt-manager.nix
deleted file mode 100644
index cc25471..0000000
--- a/hosts/common/dev/virt-manager.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{pkgs, ...}: {
-  environment.systemPackages = with pkgs; [virt-manager spice-gtk swtpm];
-  security.polkit.enable = true;
-  virtualisation = {
-    libvirtd = {
-      enable = true;
-      qemu = {
-        package = pkgs.qemu_kvm;
-        ovmf = {
-          enable = true;
-          packages = with pkgs; [OVMFFull.fd];
-        };
-        swtpm.enable = true;
-      };
-    };
-    spiceUSBRedirection.enable = true;
-  };
-}
diff --git a/nix/generate-installer.nix b/nix/generate-installer.nix
index 18a66bb..8fe3ef0 100644
--- a/nix/generate-installer.nix
+++ b/nix/generate-installer.nix
@@ -26,7 +26,7 @@
     '';
   in {
     isoImage.isoName = lib.mkForce "nixos-image-${nodeName}.iso";
-    system.stateVersion = "23.05";
+    system.stateVersion = self.stateVersion;
     nix.extraOptions = ''
       experimental-features = nix-command flakes recursive-nix
     '';
diff --git a/nix/generate-node.nix b/nix/generate-node.nix
index 271c660..7b4e763 100644
--- a/nix/generate-node.nix
+++ b/nix/generate-node.nix
@@ -19,7 +19,7 @@ in
     pkgs = self.pkgs.${nodeMeta.system};
     specialArgs = {
       inherit (nixpkgs) lib;
-      inherit (self) extraLib nodes;
+      inherit (self) extraLib nodes stateVersion;
       inherit inputs;
       inherit nodeName;
       secrets = self.secrets.content;
diff --git a/users/common/default.nix b/users/common/default.nix
index 66fa51a..0874f08 100644
--- a/users/common/default.nix
+++ b/users/common/default.nix
@@ -16,7 +16,7 @@
   ];
 
   home = {
-    stateVersion = "23.05";
+    inherit stateVersion;
     packages = with pkgs; [
       bandwhich
       btop