Publish fractal-chatgpt Nix package with st-chatgpt bridge (hosted #4688)

docs/st3/client-v0/README.md

@@ -1800,7 +1800,7 @@ The shared `checks.st3` suite includes the adapter's Rust tests.
 Rerun the scratch exercise (no live daemon or ChatGPT application is touched):
 
 ```sh
-nix develop -c bash -c 'export CARGO_TARGET_DIR=tmp/target; cargo run -p fractal-client-codegen && cargo build -j 2 -p fractal-chatgpt -p fractal -p fractal-cli --features fractal/test-support --bin st-chatgpt --bin fractal --example chatgpt_fixture && cargo test -j 2 -p fractal-chatgpt && cargo test -j 2 -p fractal --test assistant_native && python3 scripts/chatgpt-prototype-e2e.py'
+nix develop -c bash -c 'export CARGO_TARGET_DIR=tmp/target; cargo run -p fractal-client-codegen && cargo build -j 2 -p fractal-chatgpt -p fractal -p fractal-cli --features fractal/test-support --bin fractal-chatgpt --bin fractal --example chatgpt_fixture && cargo test -j 2 -p fractal-chatgpt && cargo test -j 2 -p fractal --test assistant_native && python3 scripts/chatgpt-prototype-e2e.py'
 ```
 
 The script starts the repository API harness with its own persistent store, paired gateway,

flake.nix

@@ -617,20 +617,23 @@
         st3 = fractal;
         # LIVE-MIGRATION END arn:lmig:smalltalk:2026-10-16-fractal-binary-aliases
 
-        stChatgpt = pkgs.rustPlatform.buildRustPackage {
-          pname = "st-chatgpt";
+        fractalChatgpt = pkgs.rustPlatform.buildRustPackage {
+          pname = "fractal-chatgpt";
           inherit version cargoDeps;
           src = self;
-          cargoBuildFlags = [ "-p" "fractal-chatgpt" "--bin" "st-chatgpt" ];
+          cargoBuildFlags = [ "-p" "fractal-chatgpt" "--bin" "fractal-chatgpt" ];
           # .cargo/config.toml links Linux targets with mold.
           nativeBuildInputs = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [ pkgs.mold ];
           # The shared daemon check runs the adapter's Rust tests.
           doCheck = false;
+          # LIVE-MIGRATION BRIDGE arn:lmig:smalltalk:2026-11-01-fractal-chatgpt-alias — DELETE at contraction — https://github.com/compoundingtech/fractal/issues/3032
+          postInstall = ''ln -s fractal-chatgpt "$out/bin/st-chatgpt"'';
+          # LIVE-MIGRATION END arn:lmig:smalltalk:2026-11-01-fractal-chatgpt-alias
           meta = {
             description = "Standalone Fractal ChatGPT MCP adapter";
             homepage = "https://github.com/compoundingtech/fractal";
             license = pkgs.lib.licenses.mit;
-            mainProgram = "st-chatgpt";
+            mainProgram = "fractal-chatgpt";
           };
         };
 
@@ -848,7 +851,10 @@
         packages.fractal = fractal;
         # Preserve existing .#st2 profile upgrades for at least one release.
         packages.st2 = fractal;
-        packages.st-chatgpt = stChatgpt;
+        packages.fractal-chatgpt = fractalChatgpt;
+        # LIVE-MIGRATION BRIDGE arn:lmig:smalltalk:2026-11-01-fractal-chatgpt-alias — DELETE at contraction — https://github.com/compoundingtech/fractal/issues/3032
+        packages.st-chatgpt = fractalChatgpt;
+        # LIVE-MIGRATION END arn:lmig:smalltalk:2026-11-01-fractal-chatgpt-alias
         packages.fractal-fabric-adapter = fractalFabricAdapter;
         packages.st-fabric-adapter = fractalFabricAdapter;
         # Isolated bootstrap/live proofs use the exact pairing API revision.

release-notes/fractal-chatgpt-nix-package.json

@@ -0,0 +1,11 @@
+{
+  "version": 1,
+  "summary": "Publish the ChatGPT adapter Nix package as fractal-chatgpt with the st-chatgpt bridge",
+  "replay": {"status": "none", "detail": "No graph replay or data changes."},
+  "schema": {"status": "none", "detail": "No storage schema changes."},
+  "rules": {"status": "none", "detail": "No checkpoint or coordination rule changes."},
+  "compatibility": {"status": "changed", "detail": "packages.fractal-chatgpt is canonical. packages.st-chatgpt selects the same derivation, and bin/st-chatgpt is a symlink to fractal-chatgpt. The Cargo st-chatgpt target remains. Source exercises that launch the adapter select fractal-chatgpt."},
+  "downtime": {"status": "none", "detail": "No daemon restart or service interruption is required."},
+  "manual": {"status": "changed", "detail": "New Nix consumers can select fractal-chatgpt. Existing st-chatgpt package and executable consumers continue to work. The prototype exercise builds and launches fractal-chatgpt."},
+  "recovery": {"status": "none", "detail": "No persistent data is changed. The retained package attribute and executable symlink continue to invoke the same adapter."}
+}

scripts/chatgpt-prototype-e2e.py

@@ -120,7 +120,7 @@ def replace_expired_grant():
     with socket.socket() as listener:
         listener.bind(('127.0.0.1',0)); port=listener.getsockname()[1]
     endpoint='http://127.0.0.1:'+str(port)+'/mcp'
-    adapter_args=[str(BIN/'st-chatgpt'),'--socket',str(STATE/'st3-client.sock'),'--credential-file',str(credential)]
+    adapter_args=[str(BIN/'fractal-chatgpt'),'--socket',str(STATE/'st3-client.sock'),'--credential-file',str(credential)]
     adapter=start(adapter_args+['--listen','127.0.0.1:'+str(port)],'adapter.log')
     def listening():
         try: