2 files changed, 72 insertions, 1 deletions
diff --git a/modules/nixos/services/default.nix b/modules/nixos/services/default.nix
index 038c3a6..a6a10ea 100644
--- a/modules/nixos/services/default.nix
+++ b/modules/nixos/services/default.nix
@@ -1,3 +1,6 @@
 {
-  imports = [ ./github-mirror ];
+  imports = [
+    ./determinate.nix
+    ./github-mirror
+  ];
 }
diff --git a/modules/nixos/services/determinate.nix b/modules/nixos/services/determinate.nix
new file mode 100644
index 0000000..6aa599e
--- /dev/null
+++ b/modules/nixos/services/determinate.nix
@@ -0,0 +1,68 @@
+{
+  config,
+  lib,
+  inputs',
+  ...
+}:
+
+let
+  cfg = config.services.determinate;
+
+  package = inputs'.determinate.packages.default;
+in
+
+{
+  config = lib.mkIf cfg.enable (
+    lib.mkMerge [
+      (lib.mkIf cfg.determinate-nixd.enable {
+        environment = {
+          # `determinate-nixd` overrides /etc/nix/nix.conf with it's own
+          etc."nix/nix.custom.conf" = { inherit (config.environment.etc."nix/nix.conf") source; };
+
+          systemPackages = [
+            package
+          ];
+        };
+
+        systemd = {
+          services.nix-daemon.serviceConfig = {
+            ExecStart = [
+              ""
+              "@${lib.getExe' package "determinate-nixd"} determinate-nixd --nix-bin ${config.nix.package}/bin daemon"
+            ];
+            KillMode = lib.mkDefault "process";
+            LimitNOFILE = lib.mkDefault 1048576;
+            LimitSTACK = lib.mkDefault "64M";
+            TasksMax = lib.mkDefault 1048576;
+          };
+
+          sockets = {
+            determinate-nixd = {
+              description = "Determinate Nixd Daemon Socket";
+              wantedBy = [ "sockets.target" ];
+              before = [ "multi-user.target" ];
+
+              unitConfig = {
+                RequiresMountsFor = [
+                  "/nix/store"
+                  "/nix/var/determinate"
+                ];
+              };
+
+              socketConfig = {
+                Service = "nix-daemon.service";
+                FileDescriptorName = "determinate-nixd.socket";
+                ListenStream = "/nix/var/determinate/determinate-nixd.socket";
+                DirectoryMode = "0755";
+              };
+            };
+
+            nix-daemon.socketConfig = {
+              FileDescriptorName = "nix-daemon.socket";
+            };
+          };
+        };
+      })
+    ]
+  );
+}