wclr · wclr · Mar 14, 2026 · Mar 24, 2026 · Jun 7, 2026 · Dec 26, 2023
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -60,7 +60,7 @@ jobs:
           - image: quay.io/benz0li/ghc-musl:9.8.4
             os: ubuntu-24.04-arm 
 
-          - os: macos-13  # x64
+          - os: macos-15-intel  # x64
           - os: macos-14  # arm64
           - os: windows-2022  # x64
 
@@ -164,7 +164,7 @@ jobs:
         # Moreover, npm has a hook issue that will cause spago to fail to install
         # We upgrade npm to fix this
         run: |
-          apk add jq
+          apk add jq coreutils
           ../ci/fix-home stack --haddock exec ../ci/build-package-set.sh
 
       - name: Verify that 'libtinfo' isn't in binary

diff --git a/CHANGELOG.d/fix_issue-4535.md b/CHANGELOG.d/fix_issue-4535.md
diff --git a/CHANGELOG.d/fix_issue-4545.md b/CHANGELOG.d/fix_issue-4545.md
diff --git a/CHANGELOG.d/internal_fix-typo-in-traversal.md b/CHANGELOG.d/internal_fix-typo-in-traversal.md
@@ -0,0 +1 @@
+* Fix typo in CoreFn.Traversals.traverseCoreFn which caused it to not recurse into Let bodies
diff --git a/CHANGELOG.d/internal_remove-git-upgrade-step-in-ci.md b/CHANGELOG.d/internal_remove-git-upgrade-step-in-ci.md
diff --git a/CHANGELOG.d/internal_tool_updates.md b/CHANGELOG.d/internal_tool_updates.md
diff --git a/CHANGELOG.d/internal_upgrade_to_ghc_9.6.md b/CHANGELOG.d/internal_upgrade_to_ghc_9.6.md
diff --git a/CHANGELOG.d/internal_upgrade_to_ghc_9.8.md b/CHANGELOG.d/internal_upgrade_to_ghc_9.8.md
diff --git a/CHANGELOG.d/misc_ghc-bump.md b/CHANGELOG.d/misc_ghc-bump.md
diff --git a/CHANGELOG.d/misc_static_linking.md b/CHANGELOG.d/misc_static_linking.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,40 @@
 
 Notable changes to this project are documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.15.16
+
+Bugfixes:
+
+* Fix compiler crash when a type operator is used in a type argument (#4536 by @purefunctor)
+
+* Speed up IDE performance on large projects (#4546 by @roryc89)
+
+* Fix double click select of titles in generated documentation (#4579 by @ad-si)
+
+Other improvements:
+
+* Update Stackage snapshot to lts-20.26 and GHC to 9.2.8 (#4537 by @purefunctor)
+
+* Enable statically-linked binaries using [ghc-musl](https://github.com/benz0li/ghc-musl) (#4573 by @purefunctor)
+* Update haskeline version bounds to >=0.8.2.1 && <0.9
+
+  Consequently, this fixes Cabal-based builds on GHC 9.8.4
+
+Internal:
+
+* Remove the step that upgraded Git from the CI workflow (#4541 by @rhendric)
+
+* Upgrade GHC to [`9.6.6`](https://downloads.haskell.org/~ghc/9.6.6/docs/users_guide/9.6.6-notes.html), Stackage LTS `22.43` (#4568 by @ad-si)
+* Minimum required glibc version is bumped from [`2.28` to `2.31`](https://sourceware.org/glibc/wiki/Glibc%20Timeline)
+
+* Upgrade GHC to [`9.8.4`](https://downloads.haskell.org/~ghc/9.8.4/docs/users_guide/9.8.4-notes.html), Stackage LTS `23.18` (#4574 by @ad-si)
+* Use [HLint 3.10](https://github.com/ndmitchell/hlint/blob/master/CHANGES.txt) in CI
+
+* Update weeder version in CI to 2.9.0 (#4573 by @purefunctor)
+* Add happy ==2.0.2 as build-tool-depends
+
+* Use `-fspecialize-aggressively` GHC option to improve compiler performance by ~30% on large builds (#4584 by @seastian)
+
 ## 0.15.15
 
 New features:

diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
@@ -169,6 +169,7 @@ If you would prefer to use different terms, please use the section below instead
 | [@xgrommx](https://github.com/xgrommx) | Denis Stoyanov | [MIT license] |
 | [@zudov](https://github.com/zudov) | Konstantin Zudov | [MIT license] |
 | [@roryc89](https://github.com/roryc89) | Rory Campbell | [MIT license] |
+| [@drathier](https://github.com/drathier) | Drathier | [MIT license] |
 
 
 ### Contributors using Modified Terms

diff --git a/LICENSE b/LICENSE
@@ -94,7 +94,6 @@ PureScript uses the following Haskell library packages. Their license files foll
   ghc-prim
   half
   happy
-  happy-lib
   hashable
   haskeline
   indexed-traversable

diff --git a/app/Command/Compile.hs b/app/Command/Compile.hs
@@ -16,12 +16,13 @@ import Language.PureScript qualified as P
 import Language.PureScript.CST qualified as CST
 import Language.PureScript.Errors.JSON (JSONResult(..), toJSONErrors)
 import Language.PureScript.Glob (toInputGlobs, PSCGlobs(..), warnFileTypeNotFound)
-import Language.PureScript.Make (buildMakeActions, inferForeignModules, runMake)
+import Language.PureScript.Make (buildMakeActions, inferForeignModules, progressWithFile, printProgress, runMake)
 import Options.Applicative qualified as Opts
 import SharedCLI qualified
 import System.Console.ANSI qualified as ANSI
 import System.Exit (exitSuccess, exitFailure)
-import System.Directory (getCurrentDirectory)
+import System.FilePath ((</>))
+import System.Directory (createDirectoryIfMissing, getCurrentDirectory)
 import System.IO (hPutStr, stderr, stdout)
 import System.IO.UTF8 (readUTF8FilesT)
 
@@ -68,12 +69,19 @@ compile PSCMakeOptions{..} = do
                              ]
     exitFailure
   moduleFiles <- readUTF8FilesT input
+
+  _ <- createDirectoryIfMissing True pscmOutputDir
+  let logFile = pscmOutputDir </> "compile.log"
+  let cleanFile = True
+
   (makeErrors, makeWarnings) <- runMake pscmOpts $ do
     ms <- CST.parseModulesFromFiles id moduleFiles
     let filePathMap = M.fromList $ map (\(fp, pm) -> (P.getModuleName $ CST.resPartial pm, Right fp)) ms
     foreigns <- inferForeignModules filePathMap
-    let makeActions = buildMakeActions pscmOutputDir filePathMap foreigns pscmUsePrefix
-    P.make makeActions (map snd ms)
+    logProgress <- progressWithFile logFile cleanFile
+    let makeActions = (buildMakeActions pscmOutputDir filePathMap foreigns pscmUsePrefix)
+            { P.progress = (*>) <$> printProgress <*> logProgress }
+    P.make_ makeActions (map snd ms)
   printWarningsAndErrors (P.optionsVerboseErrors pscmOpts) pscmJSONErrors moduleFiles makeWarnings makeErrors
   exitSuccess
 

diff --git a/ci/build-package-set.sh b/ci/build-package-set.sh
@@ -16,7 +16,7 @@ export PATH="$tmpdir/node_modules/.bin:$PATH"
 cd "$tmpdir"
 
 echo ::group::Ensure Spago is available
-which spago || npm install spago@0.93.43
+which spago || npm install spago
 echo ::endgroup::
 
 echo ::group::Create dummy project

diff --git a/ci/build.sh b/ci/build.sh
@@ -176,9 +176,11 @@ tar -xzf sdist-test/purescript-*.tar.gz -C sdist-test --strip-components=1
 (echo "::endgroup::"; echo "::group::Build and test PureScript") 2>/dev/null
 
 pushd sdist-test
-# Haddock -Werror goes here to keep us honest but prevent failing on
-# documentation errors in dependencies
-$STACK build $STACK_OPTS --haddock-arguments --optghc=-Werror
+# --ghc-options -Werror applies only to local packages, catching our own
+# haddock doc-comment errors without failing on warnings in dependencies.
+# (--haddock-arguments --optghc=-Werror would pass -Werror to all packages
+# via haddock, which breaks when the dependency cache is cold.)
+$STACK build $STACK_OPTS --ghc-options -Werror
 
 if [ "$do_prerelease" ]
 then

diff --git a/license-generator/generate.hs b/license-generator/generate.hs
@@ -79,6 +79,7 @@ depsNamesAndVersions = do
     name == "purescript"
     || name == "rts"
     || name == "ghc-boot-th"
+    || name == "happy-lib"
 
   parse line =
     case splitOn " " line of

diff --git a/npm-package/package.json b/npm-package/package.json
@@ -1,6 +1,6 @@
 {
   "name": "purescript",
-  "version": "0.15.15",
+  "version": "0.15.16",
   "license": "ISC",
   "description": "PureScript wrapper that makes it available as a local dependency",
   "author": {
@@ -43,7 +43,7 @@
   ],
   "scripts": {
     "prepublishOnly": "node -e \"require('fs').copyFileSync('purs.bin.placeholder', 'purs.bin');\"",
-    "postinstall": "install-purescript --purs-ver=0.15.15",
+    "postinstall": "install-purescript --purs-ver=0.15.16",
     "test": "echo 'Error: no test specified' && exit 1"
   }
 }
diff --git a/purescript.cabal b/purescript.cabal
@@ -2,7 +2,7 @@ cabal-version:  2.4
 
 name:           purescript
 -- Note: don't add prerelease identifiers here! Add them in app/Version.hs and npm-package/package.json instead.
-version:        0.15.15
+version:        0.15.16
 synopsis:       PureScript Programming Language Compiler
 description:    A small strongly, statically typed programming language with expressive types, inspired by Haskell and compiling to JavaScript.
 category:       Language
@@ -335,6 +335,7 @@ library
     Language.PureScript.Make.Actions
     Language.PureScript.Make.BuildPlan
     Language.PureScript.Make.Cache
+    Language.PureScript.Make.ExternsDiff
     Language.PureScript.Make.Monad
     Language.PureScript.ModuleDependencies
     Language.PureScript.Names
@@ -487,6 +488,8 @@ test-suite tests
     TestSourceMaps
     TestUtils
     Paths_purescript
+  autogen-modules:
+    Paths_purescript
 
 flag static
   description: Builds a statically-linked version of the PureScript compiler.

diff --git a/src/Language/PureScript/AST/Binders.hs b/src/Language/PureScript/AST/Binders.hs
@@ -7,6 +7,7 @@ module Language.PureScript.AST.Binders where
 import Prelude
 
 import Control.DeepSeq (NFData)
+import Codec.Serialise (Serialise)
 import GHC.Generics (Generic)
 import Language.PureScript.AST.SourcePos (SourceSpan)
 import Language.PureScript.AST.Literals (Literal(..))
@@ -64,7 +65,7 @@ data Binder
   -- A binder with a type annotation
   --
   | TypedBinder SourceType Binder
-  deriving (Show, Generic, NFData)
+  deriving (Show, Generic, NFData, Serialise)
 
 -- Manual Eq and Ord instances for `Binder` were added on 2018-03-05. Comparing
 -- the `SourceSpan` values embedded in some of the data constructors of `Binder`
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		* Fix typo in CoreFn.Traversals.traverseCoreFn which caused it to not recurse into Let bodies