Downgrade GHC from 9.4.8 to 9.4.7

9.4.8 throws a slow start error: https://github.com/clash-lang/clash-compiler/pull/2711/files#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5R80
bittide · Aug 6, 2024 · 668c888 · 668c888
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commit 668c888
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Showing 3 changed files with 15 additions and 14 deletions.
diff --git a/cabal.project b/cabal.project
@@ -14,8 +14,8 @@ write-ghc-environment-files: always
 -- index state, to go along with the cabal.project.freeze file. update the index
 -- state by running `cabal update` twice and looking at the index state it
 -- displays to you (as the second update will be a no-op)
-index-state: 2023-12-05T05:33:28Z
-with-compiler: ghc-9.4.8
+index-state: 2024-08-06T03:18:13Z
+with-compiler: ghc-9.4.7
 tests: True
 
 package bittide

diff --git a/cabal.project.freeze b/cabal.project.freeze
@@ -33,7 +33,7 @@ constraints: any.Cabal ==3.8.1.0,
              attoparsec -developer,
              any.attoparsec-aeson ==2.2.0.1,
              any.barbies ==2.0.5.0,
-             any.base ==4.17.2.1,
+             any.base ==4.17.2.0,
              any.base-compat ==0.13.1,
              any.base-orphans ==0.9.1,
              any.base16-bytestring ==1.0.2.0,
@@ -50,7 +50,7 @@ constraints: any.Cabal ==3.8.1.0,
              any.boring ==0.2.1,
              boring +tagged,
              any.byteorder ==1.0.4,
-             any.bytestring ==0.11.5.3,
+             any.bytestring ==0.11.5.2,
              any.cabal-doctest ==1.0.9,
              any.call-stack ==0.4.0,
              any.case-insensitive ==1.2.1.0,
@@ -69,7 +69,7 @@ constraints: any.Cabal ==3.8.1.0,
              any.clash-lib ==1.9.0,
              clash-lib -debug +doctests +unittests -workaround-ghc-mmap-crash,
              any.clash-prelude ==1.9.0,
-             clash-prelude +benchmarks +doctests -large-tuples -multiple-hidden -strict-mapsignal -super-strict +unittests -workaround-ghc-mmap-crash,
+             clash-prelude +benchmarks +doctests -large-tuples -strict-mapsignal -super-strict +unittests -workaround-ghc-mmap-crash,
              any.clash-prelude-hedgehog ==1.9.0,
              any.clash-protocols ==0.1,
              clash-protocols -ci -large-tuples,
@@ -129,11 +129,11 @@ constraints: any.Cabal ==3.8.1.0,
              foldable1-classes-compat +tagged,
              any.free ==5.2,
              any.generically ==0.1.1,
-             any.ghc ==9.4.8,
+             any.ghc ==9.4.7,
              any.ghc-bignum ==1.3,
-             any.ghc-boot ==9.4.8,
-             any.ghc-boot-th ==9.4.8,
-             any.ghc-heap ==9.4.8,
+             any.ghc-boot ==9.4.7,
+             any.ghc-boot-th ==9.4.7,
+             any.ghc-heap ==9.4.7,
              any.ghc-paths ==0.1.0.12,
              any.ghc-prim ==0.9.1,
              any.ghc-tcplugins-extra ==0.4.5,
@@ -144,7 +144,7 @@ constraints: any.Cabal ==3.8.1.0,
              ghc-typelits-knownnat -deverror,
              any.ghc-typelits-natnormalise ==0.7.9,
              ghc-typelits-natnormalise -deverror,
-             any.ghci ==9.4.8,
+             any.ghci ==9.4.7,
              any.half ==0.3.1,
              any.happy ==1.20.1.1,
              any.happy-dot ==1.0.0.0,
@@ -221,7 +221,7 @@ constraints: any.Cabal ==3.8.1.0,
              any.prettyprinter-ansi-terminal ==1.1.3,
              any.prettyprinter-interp ==0.2.0.0,
              any.primitive ==0.8.0.0,
-             any.process ==1.6.18.0,
+             any.process ==1.6.17.0,
              any.profunctors ==5.6.2,
              any.random ==1.2.1.1,
              any.recursion-schemes ==5.2.2.5,
@@ -261,8 +261,6 @@ constraints: any.Cabal ==3.8.1.0,
              any.strict-tuple ==0.1.5.3,
              any.string-interpolate ==0.3.2.1,
              string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
-             any.stringsearch ==0.3.6.6,
-             stringsearch -base3 +base4,
              any.syb ==0.7.2.4,
              any.tagged ==0.8.8,
              tagged +deepseq +transformers,

diff --git a/shell.nix b/shell.nix
@@ -17,7 +17,10 @@ pkgs.mkShell {
       pkgs.haskellPackages.cabal-gild
       pkgs.dtc
       pkgs.gcc
-      pkgs.haskell.compiler.ghc94
+
+      # Clash throws an error on 9.4.8 to 9.6.2
+      # See https://github.com/clash-lang/clash-compiler/pull/2711/files#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5R80
+      pkgs.haskell.compiler.ghc947
       pkgs.pkg-config
       pkgs.python311Full
       pkgs.python311Packages.matplotlib