2 files changed, 124 insertions, 0 deletions
diff --git a/modules/darwin/services/default.nix b/modules/darwin/services/default.nix
new file mode 100644
index 0000000..499a418
--- /dev/null
+++ b/modules/darwin/services/default.nix
@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./determinate.nix
+  ];
+}
diff --git a/modules/darwin/services/determinate.nix b/modules/darwin/services/determinate.nix
new file mode 100644
index 0000000..2716150
--- /dev/null
+++ b/modules/darwin/services/determinate.nix
@@ -0,0 +1,119 @@
+{
+  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 {
+        assertions = [
+          {
+            assertion = config.nix.daemon;
+            message = "`nix.daemon` must be `true` when using `traits.determinate`";
+          }
+
+          {
+            assertion = !config.services.nix-daemon.enable;
+            message = "`services.nix-daemon` and `traits.determinate` conflict";
+          }
+        ];
+
+        launchd.daemons = {
+          determinate-nixd-store.serviceConfig = {
+            Label = "systems.determinate.nix-store";
+            RunAtLoad = true;
+
+            StandardErrorPath = lib.mkForce "/var/log/determinate-nix-init.log";
+            StandardOutPath = lib.mkForce "/var/log/determinate-nix-init.log";
+
+            ProgramArguments = lib.mkForce [
+              "/usr/local/bin/determinate-nixd"
+              "--nix-bin"
+              "${config.nix.package}/bin"
+              "init"
+            ];
+          };
+
+          determinate-nixd.serviceConfig = {
+            Label = "systems.determinate.nix-daemon";
+
+            StandardErrorPath = lib.mkForce "/var/log/determinate-nix-daemon.log";
+            StandardOutPath = lib.mkForce "/var/log/determinate-nix-daemon.log";
+
+            ProgramArguments = lib.mkForce [
+              "/usr/local/bin/determinate-nixd"
+              "--nix-bin"
+              "${config.nix.package}/bin"
+              "daemon"
+            ];
+
+            Sockets = {
+              "determinate-nixd.socket" = {
+                # We'd set `SockFamily = "Unix";`, but nix-darwin automatically sets it with SockPathName
+                SockPassive = true;
+                SockPathName = "/var/run/determinate-nixd.socket";
+              };
+
+              "nix-daemon.socket" = {
+                # We'd set `SockFamily = "Unix";`, but nix-darwin automatically sets it with SockPathName
+                SockPassive = true;
+                SockPathName = "/var/run/nix-daemon.socket";
+              };
+            };
+
+            SoftResourceLimits = {
+              NumberOfFiles = lib.mkDefault 1048576;
+              NumberOfProcesses = lib.mkDefault 1048576;
+              Stack = lib.mkDefault 67108864;
+            };
+
+            HardResourceLimits = {
+              NumberOfFiles = lib.mkDefault 1048576;
+              NumberOfProcesses = lib.mkDefault 1048576;
+              Stack = lib.mkDefault 67108864;
+            };
+          };
+        };
+
+        nix.useDaemon = true;
+
+        services.nix-daemon.enable = false;
+
+        system.activationScripts = {
+          launchd.text = lib.mkBefore ''
+            if test -e /Library/LaunchDaemons/org.nixos.nix-daemon.plist; then
+              echo "Unloading org.nixos.nix-daemon"
+              launchctl bootout system /Library/LaunchDaemons/org.nixos.nix-daemon.plist || true
+              mv /Library/LaunchDaemons/org.nixos.nix-daemon.plist /Library/LaunchDaemons/.before-determinate-nixd.org.nixos.nix-daemon.plist.skip
+            fi
+
+            if test -e /Library/LaunchDaemons/org.nixos.darwin-store.plist; then
+              echo "Unloading org.nixos.darwin-store"
+              launchctl bootout system /Library/LaunchDaemons/org.nixos.darwin-store.plist || true
+              mv /Library/LaunchDaemons/org.nixos.darwin-store.plist /Library/LaunchDaemons/.before-determinate-nixd.org.nixos.darwin-store.plist.skip
+            fi
+
+            install -d -m 755 -o root -g wheel /usr/local/bin
+            cp ${lib.getExe package "determinate-nixd"} /usr/local/bin/.determinate-nixd.next
+            chmod +x /usr/local/bin/.determinate-nixd.next
+            mv /usr/local/bin/.determinate-nixd.next /usr/local/bin/determinate-nixd
+          '';
+
+          nix-daemon = lib.mkForce {
+            enable = false;
+            text = "";
+          };
+        };
+      })
+    ]
+  );
+}