Use single threaded build for debugging heap overflow issues

Use -j1 in regression CI for better debugging

Author: harendra-kumar

.github/workflows/regression-check.yml

@@ -139,7 +139,7 @@ jobs:
 
     - name: Run benchmarks and append
       run: |
-        ./bench-runner --package-name streamly-benchmarks --package-version 0.0.0 --targets "$CI_BENCHMARKS" --raw --append
+        ./bench-runner --package-name streamly-benchmarks --package-version 0.0.0 --cabal-build-options "-j1" --targets "$CI_BENCHMARKS" --raw --append
 
     # -----------------------------------------------------------------
     # -- Compare

cabal.project

@@ -3,3 +3,6 @@ packages:   streamly.cabal
           , test/streamly-tests.cabal
           , benchmark/streamly-benchmarks.cabal
           , bench-test-lib/bench-test-lib.cabal
+
+-- For debugging heap overflow
+jobs: 1

cabal.project.Werror

@@ -5,6 +5,9 @@ packages:
   core
   bench-test-lib
 
+-- For debugging heap overflow
+jobs: 1
+
 package streamly
   ghc-options: -Werror