zaphyra's git: nixfiles

nixos/zpha/profile/zaphyra: fancy MotD generator with fops! (and useful informations...)

diff --git a/nixosModules/zpha/profiles/zaphyra.nix b/nixosModules/zpha/profiles/zaphyra.nix
@@ -47,18 +47,65 @@ in
       ../../../maidModules/programs/lazygit.nix
     ];
 
-    users.users = {
-      root = {
-        extraGroups = [ "ssh" ];
-        openssh.authorizedKeys.keys = [
-          (builtins.readFile "${pkgs.zpha.website}/ssh_pubkey.asc")
-        ];
-      };
-      zaphyra.maid = {
-        programs = {
-          starship.enable = true;
+    users = {
+      users = {
+        root = {
+          extraGroups = [ "ssh" ];
+          openssh.authorizedKeys.keys = [
+            (builtins.readFile "${pkgs.zpha.website}/ssh_pubkey.asc")
+          ];
+        };
+        zaphyra.maid = {
+          programs = {
+            starship.enable = true;
+          };
         };
       };
+      motdFile = "/run/motd";
+    };
+    systemd.services.motd-generator = {
+      before = [ "sysinit-reactivation.target" ];
+      wantedBy = [
+        "sysinit-reactivation.target"
+        "multi-user.target"
+      ];
+      script =
+        let
+          distro = "${config.system.nixos.distroName} ${config.system.nixos.version}";
+          deployDate = "`TZ=UTC date --date=@$(stat -c %W /nix/var/nix/profiles/system) +'%Y-%m-%d %H:%M'` (UTC)";
+          lastCommitRev = self.dirtyShortRev or self.shortRev;
+          lastCommitDate =
+            with lib.strings;
+            let
+              date = self.lastModifiedDate;
+              year = substring 0 4 date;
+              month = substring 4 2 date;
+              day = substring 6 2 date;
+              hour = substring 8 2 date;
+              minute = substring 10 2 date;
+            in
+            "${year}-${month}-${day} ${hour}:${minute} (UTC)";
+          commitText = lib.optionalString (
+            self ? rev
+          ) "..was built from: ${lastCommitRev} [${lastCommitDate}]";
+          commitWarning = lib.optionalString (
+            self ? dirtyRev
+          ) "This system was built with uncommited changes! Please remember to commit them!";
+        in
+        ''
+          cat << EOF > /run/motd
+          ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡀⠀⠀
+          ⠀⠀⠀⠀⠀⠀⠀⣤⣄⣀⠀⠀⠀⠀⠀⣠⣿⡇⠀⠀
+          ⠀⠀⠀⠀⠀⠤⢶⣬⣿⣿⣷⣾⣂⣀⣴⣿⣿⡇⠀⠀Welcome on ${config.networking.fqdn}
+          ⠀⠀⠀⠀⣠⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀This system...
+          ⠀⠀⠀⣼⣿⠁⠀⢹⣿⣿⡏⠀⠈⢿⣿⣿⣿⠀⠀⠀..is running: ${distro}
+          ⠀⠀⢠⣿⣿⣄⣀⡼⠛⢿⣷⣄⣠⣿⣿⣿⣿⡆⠀⠀..was deployed at: ${deployDate}
+          ⠀⠀⢸⣿⣿⣿⠻⡷⠒⢾⣿⠟⣻⣿⣿⣿⣿⡇⠀⠀${commitText}
+          ⠀⠀⠀⢿⣿⣿⣦⣠⣶⣄⣠⣾⣿⣿⣿⣿⣿⠇⠀⠀${commitWarning}
+          ⠀⠀⠀⠈⠛⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠋⠀⠀⠀
+
+          EOF
+        '';
     };
 
     zpha = {