Use custom cabal.project-${ghcVersion} if exists

Author: jneira

.azure/linux-cabal.bashrc

@@ -1 +1,7 @@
+if [ -z "$PROJECT_FILE" ]; then
+  export PROJECT_FILE="cabal.project"
+  if [ -f "cabal.project-$GHC_VERSION" ]; then 
+    export PROJECT_FILE="cabal.project-$GHC_VERSION"
+  fi
+fi
 export PATH=$HOME/.cabal/bin:/opt/cabal/$CABAL_VERSION/bin:/opt/ghc/$GHC_VERSION/bin:$HOME/.local/bin:$PATH

.azure/linux-cabal.yml

@@ -45,19 +45,19 @@ jobs:
     displayName: Update cabal
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-build --disable-tests --disable-benchmarks --only-dependencies
+      cabal v2-build --disable-tests --disable-benchmarks --only-dependencies --project-file $PROJECT_FILE
     displayName: Build dependencies
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-build --disable-tests --disable-benchmarks
+      cabal v2-build --disable-tests --disable-benchmarks --project-file $PROJECT_FILE
     displayName: Build `hie`
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-install  # `hie` binary required locally for tests
+      cabal v2-install --project-file $PROJECT_FILE # `hie` binary required locally for tests
     displayName: Install `hie`
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-build --enable-tests --enable-benchmarks --only-dependencies
+      cabal v2-build --enable-tests --enable-benchmarks --only-dependencies --project-file $PROJECT_FILE
     displayName: Build Test-dependencies
   - bash: |
       sudo apt update
@@ -70,20 +70,20 @@ jobs:
     displayName: "Install Runtime Test-Dependencies: liquidhaskell"
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-build hoogle
-      cabal v2-exec hoogle generate
+      cabal v2-build hoogle --project-file $PROJECT_FILE
+      cabal v2-exec hoogle generate --project-file $PROJECT_FILE
     displayName: "Install Runtime Test-Dependencies: hoogle database"
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-test :unit-test
+      cabal v2-test :unit-test --project-file $PROJECT_FILE
     displayName: "Run Test: unit-test"
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-test :dispatcher-test :plugin-dispatcher-test :wrapper-test
+      cabal v2-test :dispatcher-test :plugin-dispatcher-test :wrapper-test --project-file $PROJECT_FILE
     displayName: "Run Test: dispatcher-test, plugin-dispatcher-test and wrapper-test"
   - bash: |
       source .azure/linux-cabal.bashrc
-      cabal v2-test :func-test
+      cabal v2-test :func-test --project-file $PROJECT_FILE
     displayName: "Run Test: func-test"
   - bash: |
       mkdir -p .azure-cache

.azure/macos-cabal.bashrc

@@ -1,2 +1,8 @@
+if [ -z "$PROJECT_FILE" ]; then
+  export PROJECT_FILE="cabal.project"
+  if [ -f "cabal.project-$GHC_VERSION" ]; then
+    export PROJECT_FILE="cabal.project-$GHC_VERSION"
+  fi
+fi
 export CABAL_ROOT=$HOME/.cabal
 export PATH=$CABAL_ROOT/bin:$PATH

.azure/windows-cabal.bashrc

@@ -1,3 +1,9 @@
+if [ -z "$PROJECT_FILE" ]; then
+  export PROJECT_FILE="cabal.project"
+  if [ -f "cabal.project-$GHC_VERSION" ]; then
+    export PROJECT_FILE="cabal.project-$GHC_VERSION"
+  fi
+fi
 if [ -z "$CABAL_DIR" ]; then
   CABAL_DIR="$APPDATA\\cabal"
 fi

.azure/windows-cabal.yml

@@ -5,7 +5,8 @@ jobs:
     vmImage: windows-2019
   strategy:
     matrix:
-      # It still is not in chocolatey
+      # ghc versions 8.8.1 and 8.8.2 are not usable in windows
+      # due to https://gitlab.haskell.org/ghc/ghc/issues/17575
       # ghc-8.8.2:
       #   GHC_VERSION: "8.8.2"
       ghc-8.6.5:
@@ -51,28 +52,28 @@ jobs:
     displayName: Install cabal
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-update
+      cabal v2-update --project-file $PROJECT_FILE
       echo "store-dir: $CABAL_STORE_DIR" >> $CABAL_ROOT/config
       echo "overwrite-policy: always" >> $CABAL_ROOT/config
     displayName: Update cabal
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-build all --disable-tests --disable-benchmarks --only-dependencies
+      cabal v2-build all --disable-tests --disable-benchmarks --only-dependencies --project-file $PROJECT_FILE
     displayName: Build dependencies
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-build all --disable-tests --disable-benchmarks
+      cabal v2-build all --disable-tests --disable-benchmarks --project-file $PROJECT_FILE
     displayName: Build `hie`
   - bash: |
       source .azure/windows-cabal.bashrc
       # `hie` binary required locally for tests
       # we have to use a separate store for install and builds
       # to workaround https://github.com/haskell/cabal/issues/6483
-      cabal --store-dir ${CABAL_STORE_DIR}i v2-install
+      cabal --store-dir ${CABAL_STORE_DIR}i v2-install --project-file $PROJECT_FILE
     displayName: Install `hie`
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-build all --enable-tests --enable-benchmarks --only-dependencies
+      cabal v2-build all --enable-tests --enable-benchmarks --only-dependencies --project-file $PROJECT_FILE
     displayName: Build Test-dependencies
   - bash: |
       mkdir -p /usr/local
@@ -88,31 +89,31 @@ jobs:
     displayName: "Install Runtime Test-Dependencies: liquidhaskell"
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-build hoogle
-      cabal v2-exec hoogle generate
+      cabal v2-build hoogle --project-file $PROJECT_FILE
+      cabal v2-exec hoogle generate --project-file $PROJECT_FILE
     displayName: "Install Runtime Test-Dependencies: hoogle database"
   - bash: |
       curl -sSkL http://www.stackage.org/stack/windows-x86_64 -o /usr/bin/stack.zip
       unzip -o /usr/bin/stack.zip -d /usr/bin/
       mkdir -p "$STACK_ROOT"
-      # If we don't install the ghc used in test projects in advance, tests fail 
+      # If we don't install the ghc used in test projects in advance, tests fail
       stack setup --stack-yaml stack-${GHC_VERSION}.yaml
     displayName: "Install Runtime Unit Test-Dependencies: stack"
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-test :unit-test
+      cabal v2-test :unit-test --project-file $PROJECT_FILE
     displayName: "Run Test: unit-test"
   - bash: |
       source .azure/windows-cabal.bashrc
       # Needed for wrapper-test
       stack setup --stack-yaml stack-8.8.1.yaml
       stack setup --stack-yaml stack-8.6.5.yaml
       # TODO Enable :dispatcher-test suite
-      cabal v2-test :plugin-dispatcher-test :wrapper-test # :dispatcher-test 
+      cabal v2-test :plugin-dispatcher-test :wrapper-test # :dispatcher-test --project-file $PROJECT_FILE
     displayName: "Run Test: dispatcher-test, plugin-dispatcher-test and wrapper-test"
   - bash: |
       source .azure/windows-cabal.bashrc
-      cabal v2-test :func-test
+      cabal v2-test :func-test --project-file $PROJECT_FILE
     displayName: "Run Test: func-test"
   - bash: |
       source .azure/windows-cabal.bashrc