modularize nix flake

pkgs/fabric/default.nix

@@ -0,0 +1,25 @@
+{
+  lib,
+  buildGoApplication,
+}:
+
+buildGoApplication {
+  pname = "fabric-ai";
+  version = import ./version.nix;
+  src = ../../.;
+  pwd = ../../.;
+  modules = ../../gomod2nix.toml;
+
+  ldflags = [
+    "-s"
+    "-w"
+  ];
+
+  meta = with lib; {
+    description = "Fabric is an open-source framework for augmenting humans using AI. It provides a modular framework for solving specific problems using a crowdsourced set of AI prompts that can be used anywhere";
+    homepage = "https://github.com/danielmiessler/fabric";
+    license = licenses.mit;
+    platforms = platforms.all;
+    mainProgram = "fabric";
+  };
+}

pkgs/fabric/version.nix

@@ -0,0 +1 @@
+"1.4.85"