feat: add openspec package

README.md

@@ -50,6 +50,7 @@ nix run git+https://code.m3ta.dev/m3tam3re/nixpkgs#zellij-ps
 | `notesmd-cli`      | Obsidian CLI (Community) - Interact with Obsidian in the terminal |
 | `opencode`         | AI coding agent built for the terminal |
 | `opencode-desktop` | OpenCode Desktop App with Wayland support (includes workaround for upstream issue #11755) |
+| `openspec`         | Spec-driven development (SDD) for AI coding assistants |
 | `pomodoro-timer`   | Pomodoro timer utility                |
 | `rofi-project-opener` | Rofi-based project launcher        |
 | `sidecar`          | Companion tool for CLI agents with diffs, file trees, and task management |

flake.lock

@@ -53,11 +53,32 @@
         "type": "github"
       }
     },
+    "openspec": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1771409495,
+        "narHash": "sha256-LplnuO/OHSFL8S8iwQ16CZTjlPxRV9XohkKxL3uA5Sc=",
+        "owner": "Fission-AI",
+        "repo": "OpenSpec",
+        "rev": "5fd8e9d66c3b6b116e7af814a6013c2d9c4958dd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Fission-AI",
+        "repo": "OpenSpec",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "nixpkgs": "nixpkgs",
         "nixpkgs-master": "nixpkgs-master",
-        "opencode": "opencode"
+        "opencode": "opencode",
+        "openspec": "openspec"
       }
     }
   },

flake.nix

@@ -10,6 +10,12 @@
       url = "github:anomalyco/opencode/v1.2.6";
       inputs.nixpkgs.follows = "nixpkgs-master";
     };
+
+    # openspec - spec-driven development for AI coding assistants
+    openspec = {
+      url = "github:Fission-AI/OpenSpec";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = {

pkgs/default.nix

@@ -24,4 +24,5 @@
   # Imported from flake inputs
   opencode = inputs.opencode.packages.${pkgs.system}.opencode;
   opencode-desktop = pkgs.callPackage ./opencode-desktop {inherit inputs;};
+  openspec = inputs.openspec.packages.${pkgs.system}.default;
 }