Prepare for a release compatible with 4.14

.github/workflows/build-and-test.yml

@@ -4,7 +4,7 @@ on:
   pull_request:
   push:
     branches:
-      - master
+      - 414-LTS
   schedule:
     # Prime the caches every Monday
     - cron: 0 1 * * MON
@@ -21,8 +21,7 @@ jobs:
           - macos-latest
           - windows-latest
         ocaml-compiler:
-          - "5.2"
-
+          - "4.14"
 
     runs-on: ${{ matrix.os }}
 
@@ -59,19 +58,21 @@ jobs:
       - name: Build and install dependencies
         run: opam install .
 
-      # the makefile explains why we don't use --with-test
-      # ppx expect is not yet compatible with 5.1 and test output vary from one
-      # compiler to another. We only test on 4.14.
+      # the makefile explains why we don't use test dependencies
       - name: Install test dependencies
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make install-test-deps
 
       - name: Run build @all
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make all
 
       - name: Run the unit tests
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make test-ocaml
 
       - name: Run the template integration tests
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make test-e2e
 
   coverage:
@@ -86,7 +87,7 @@ jobs:
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v2
         with:
-          ocaml-compiler: "5.2"
+          ocaml-compiler: "4.14"
           allow-prerelease-opam: true
 
       - name: Set git user

.github/workflows/changelog.yml

@@ -2,7 +2,7 @@ name: Changelog check
 
 on:
   pull_request:
-    branches: [master]
+    branches: [414-LTS]
     types: [opened, synchronize, reopened, labeled, unlabeled]
 
 jobs:

.github/workflows/nix.yml

@@ -3,7 +3,7 @@ on:
   pull_request:
   push:
     branches:
-      - master
+      - 414-LTS
 jobs:
   # tests:
   #   runs-on: ubuntu-latest

Makefile

@@ -17,7 +17,7 @@ all:
 # results in a conflict
 .PHONY: install-test-deps
 install-test-deps:
-	opam install --yes cinaps 'ppx_expect>=v0.17.0' \
+	opam install --yes cinaps 'ppx_expect<v0.17.0' \
 		ocamlformat.$$(awk -F = '$$1 == "version" {print $$2}' .ocamlformat)
 
 .PHONY: dev

dune-project

@@ -34,7 +34,7 @@ possible and does not make any assumptions about IO.
   yojson
   (ppx_yojson_conv_lib (>= "v0.14"))
   (cinaps :with-test)
-  (ppx_expect (and (>= v0.17.0) :with-test))
+  (ppx_expect (and (>= v0.15.0) (< 0.17.0) :with-test))
   (uutf (>= 1.0.2))
   (odoc :with-doc)
   (ocaml (>= 4.14))))
@@ -55,21 +55,21 @@ possible and does not make any assumptions about IO.
   dyn
   stdune
   (fiber (and (>= 3.1.1) (< 4.0.0)))
-  (ocaml (>= 5.2.0))
+  (ocaml (and (>= 4.14.0) (< 5.0)))
   xdg
   ordering
   dune-build-info
   spawn
   astring
   camlp-streams
-  (ppx_expect (and (>= v0.17.0) :with-test))
+  (ppx_expect (and (>= v0.15.0) (< 0.17.0) :with-test))
   (ocamlformat (and :with-test (= 0.26.2)))
   (ocamlc-loc (>= 3.7.0))
   (pp (>= 1.1.2))
   (csexp (>= 1.5))
   (ocamlformat-rpc-lib (>= 0.21.0))
   (odoc :with-doc)
-  (merlin-lib (and (>= 5.2) (< 6.0)))))
+  (merlin-lib (and (>= 4.18) (< 5.0)))))
 
 (package
  (name jsonrpc)

flake.nix

@@ -1,13 +1,9 @@
 {
   inputs = {
     flake-utils.url = "github:numtide/flake-utils";
-    nixpkgs.url = "github:nix-ocaml/nix-overlays";
-    merlin5_2 = {
-      url = "github:ocaml/merlin/main";
-      flake = false;
-    };
-    merlin5_1 = {
-      url = "github:ocaml/merlin/501";
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    merlin4_14 = {
+      url = "github:ocaml/merlin/v4.18-414";
       flake = false;
     };
   };
@@ -30,7 +26,7 @@
         });
         dune-release =
           prev.dune-release.overrideAttrs (_: { doCheck = false; });
-        ocamlPackages = prev.ocamlPackages.overrideScope' (oself: osuper:
+        ocamlPackages = prev.ocamlPackages.overrideScope (oself: osuper:
           let
             fixPreBuild = o: {
               propagatedBuildInputs = o.propagatedBuildInputs ++ [ oself.pp ];
@@ -58,33 +54,24 @@
         in rec {
           jsonrpc = buildDunePackage (basePackage // {
             pname = "jsonrpc";
-            doCheck = false;
             propagatedBuildInputs = with pkgs.ocamlPackages; [ ];
           });
 
           lsp = buildDunePackage (basePackage // {
             pname = "lsp";
-            doCheck = false;
             propagatedBuildInputs = with pkgs.ocamlPackages; [
               jsonrpc
               yojson
               ppx_yojson_conv_lib
               uutf
             ];
             checkInputs = let p = pkgs.ocamlPackages;
-            in [
-              p.stdune
-              p.cinaps
-              p.ppx_expect
-              p.ppx_yojson_conv
-              (ocamlformat pkgs)
-            ];
+            in [ p.cinaps p.ppx_expect p.ppx_yojson_conv (ocamlformat pkgs) ];
           });
 
           ocaml-lsp = with pkgs.ocamlPackages;
             buildDunePackage (basePackage // {
               pname = package;
-              doCheck = false;
               checkInputs = let p = pkgs.ocamlPackages;
               in [
                 p.ppx_expect
@@ -137,29 +124,20 @@
             overlays = [ (ocamlVersionOverlay ocaml) (overlay merlin) ];
             inherit system;
           };
-        pkgs_5_1 =
-          makeNixpkgs (ocaml: ocaml.ocamlPackages_5_1) inputs.merlin5_1;
-        pkgs_5_2 =
-          makeNixpkgs (ocaml: ocaml.ocamlPackages_5_2) inputs.merlin5_2;
-        localPackages_5_1 = makeLocalPackages pkgs_5_1;
-        localPackages_5_2 = makeLocalPackages pkgs_5_2;
+        pkgs_4_14 =
+          makeNixpkgs (ocaml: ocaml.ocamlPackages_4_14) inputs.merlin4_14;
+        localPackages_4_14 = makeLocalPackages pkgs_4_14;
         devShell = localPackages: nixpkgs:
           nixpkgs.mkShell {
             buildInputs = [ nixpkgs.ocamlPackages.utop ];
-            inputsFrom =
-              builtins.map (x: x.overrideAttrs (p: n: { doCheck = true; }))
-              (builtins.attrValues localPackages);
+            inputsFrom = builtins.attrValues localPackages;
           };
       in {
-        packages = (localPackages_5_2 // {
-          default = localPackages_5_2.ocaml-lsp;
-          ocaml_5_1 = localPackages_5_1;
-        });
+        packages =
+          (localPackages_4_14 // { default = localPackages_4_14.ocaml-lsp; });
 
         devShells = {
-          default = devShell localPackages_5_2 pkgs_5_2;
-
-          ocaml5_1 = devShell localPackages_5_1 pkgs_5_1;
+          default = devShell localPackages_4_14 pkgs_4_14;
 
           release = pkgsWithoutOverlays.mkShell {
             buildInputs = [ pkgsWithoutOverlays.dune-release ];
@@ -176,8 +154,8 @@
             ];
           };
 
-          check = pkgs_5_2.mkShell {
-            inputsFrom = builtins.attrValues localPackages_5_2;
+          check = pkgs_4_14.mkShell {
+            inputsFrom = builtins.attrValues localPackages_4_14;
           };
         };
       }));

jsonrpc-fiber/test/dune

@@ -12,7 +12,7 @@
   jsonrpc_fiber
   ;; This is because of the (implicit_transitive_deps false)
   ;; in dune-project
-  ppx_expect
+  ppx_expect.common
   ppx_expect.config
   ppx_expect.config_types
   ppx_inline_test.config

lsp-fiber/test/dune

@@ -19,7 +19,7 @@
   lsp_fiber
   ;; This is because of the (implicit_transitive_deps false)
   ;; in dune-project
-  ppx_expect
+  ppx_expect.common
   ppx_expect.config
   ppx_expect.config_types
   ppx_inline_test.config

lsp.opam

@@ -28,7 +28,7 @@ depends: [
   "yojson"
   "ppx_yojson_conv_lib" {>= "v0.14"}
   "cinaps" {with-test}
-  "ppx_expect" {>= "v0.17.0" & with-test}
+  "ppx_expect" {>= "v0.15.0" & < "0.17.0" & with-test}
   "uutf" {>= "1.0.2"}
   "odoc" {with-doc}
   "ocaml" {>= "4.14"}