add possibility to run install.hs from cabal

.azure/linux-installhs-stack.yml

@@ -0,0 +1,32 @@
+jobs:
+- job: Linux_installhs_Stack
+  timeoutInMinutes: 0
+  pool:
+    vmImage: ubuntu-16.04
+  strategy:
+    matrix:
+      shake:
+        YAML_FILE: install/shake.yaml
+  steps:
+  - bash: |
+      export STACK_ROOT="$(Build.SourcesDirectory)"/.stack-root
+      mkdir -p ~/.local/bin
+      curl -L https://get.haskellstack.org/stable/linux-x86_64.tar.gz | \
+        tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
+    displayName: Install stack
+  - bash: |
+      source .azure/linux.bashrc
+      stack setup --stack-yaml $(YAML_FILE)
+    displayName: Install GHC
+  - bash: |
+      source .azure/linux.bashrc
+      stack --stack-yaml $(YAML_FILE) --install-ghc build --only-dependencies
+    displayName: Build dependencies
+  - bash: |
+      source .azure/linux.bashrc
+      stack build --stack-yaml $(YAML_FILE)
+    displayName: Build `hie-install`
+  - bash: |
+      source .azure/linux.bashrc
+      stack install.hs help
+    displayName: Run help of `instal.hs`

.azure/macos-installhs-stack.yml

@@ -0,0 +1,32 @@
+jobs:
+- job: MacOs_installhs_Stack
+  timeoutInMinutes: 0
+  pool:
+    vmImage: macOS-10.13
+  strategy:
+    matrix:
+      shake:
+        YAML_FILE: install/shake.yaml
+  steps:
+  - bash: |
+      export STACK_ROOT="$(Build.SourcesDirectory)"/.stack-root
+      mkdir -p ~/.local/bin
+      curl -skL https://get.haskellstack.org/stable/osx-x86_64.tar.gz | \
+        tar xz --strip-components=1 --include '*/stack' -C ~/.local/bin;
+    displayName: Install stack
+  - bash: |
+      source .azure/macos.bashrc
+      stack setup --stack-yaml $(YAML_FILE)
+    displayName: Install GHC
+  - bash: |
+      source .azure/macos.bashrc
+      stack --stack-yaml $(YAML_FILE) --install-ghc build --only-dependencies
+    displayName: Build dependencies
+  - bash: |
+      source .azure/macos.bashrc
+      stack build --stack-yaml $(YAML_FILE)
+    displayName: Build `hie-install`
+  - bash: |
+      source .azure/macos.bashrc
+      stack install.hs help
+    displayName: Run help of `instal.hs`

.azure/windows-installhs-cabal.yml

@@ -0,0 +1,37 @@
+jobs:
+- job: Windows_installhs_Cabal
+  timeoutInMinutes: 0
+  pool:
+    vmImage: windows-2019
+  variables:
+    YAML_FILE: install/shake.yaml
+    PROJECT_FILE: install/shake.project
+  steps:
+  - 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/
+    displayName: Install stack
+  - bash: |
+      source .azure/windows.bashrc
+      stack setup --stack-yaml $(YAML_FILE)
+    displayName: Install GHC
+  - bash: |
+      source .azure/windows.bashrc
+      stack install cabal-install --stack-yaml $(YAML_FILE)
+    displayName: Install `cabal-install`
+  - bash: |
+      source .azure/windows.bashrc
+      cabal update
+    displayName: update cabal
+  # - bash: |
+  #     source .azure/windows.bashrc
+  #     stack --stack-yaml $(YAML_FILE) build --only-dependencies
+  #   displayName: Build dependencies
+  - bash: |
+      source .azure/windows.bashrc
+      cabal v2-build hie-install -w $(stack path --stack-yaml $(YAML_FILE) --compiler-exe) --project-file $(PROJECT_FILE)
+    displayName: Build `hie-install`
+  - bash: |
+      source .azure/windows.bashrc
+      cabal v2-run install.hs -w $(stack path --stack-yaml $(YAML_FILE) --compiler-exe) --project-file $(PROJECT_FILE) help
+    displayName: Run help of `install.hs`

.azure/windows-installhs-stack.yml

@@ -0,0 +1,30 @@
+jobs:
+- job: Windows_installhs_Stack
+  timeoutInMinutes: 0
+  pool:
+    vmImage: windows-2019
+  strategy:
+    matrix:
+      shake:
+        YAML_FILE: install/shake.yaml
+  steps:
+  - 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/
+    displayName: Install stack
+  - bash: |
+      source .azure/windows.bashrc
+      stack setup --stack-yaml $(YAML_FILE)
+    displayName: Install GHC
+  - bash: |
+      source .azure/windows.bashrc
+      stack --stack-yaml $(YAML_FILE) --install-ghc build --only-dependencies
+    displayName: Build dependencies
+  - bash: |
+      source .azure/windows.bashrc
+      stack build --stack-yaml $(YAML_FILE)
+    displayName: Build `hie-install`
+  - bash: |
+      source .azure/windows.bashrc
+      stack install.hs help
+    displayName: Run help of `instal.hs`

.gitignore

@@ -73,3 +73,4 @@ _build/
 
 # stack 2.1 stack.yaml lock files
 stack*.yaml.lock
+shake.yaml.lock

README.md

@@ -201,6 +201,20 @@ stack ./install.hs help
 
 Remember, this will take time to download a Stackage-LTS and an appropriate GHC. However, afterwards all commands should work as expected.
 
+##### Install via cabal
+
+The install-script can be invoked via `cabal` instead of `stack` with the command
+
+```bash
+cabal v2-run ./install.hs --project-file install/shake.project <target>
+```
+
+Running the script with cabal on windows seems to have some issues and is currently not fully supported.
+
+Unfortunately, it is still required to have `stack` installed so that the install-script can locate the `local-bin` directory (on Linux `~/.local/bin`) and copy the `hie` binaries to `hie-x.y.z`, which is required for the `hie-wrapper` to function as expected.
+
+For brevity, only the `stack`-based commands are presented in the following sections.
+
 ##### Install specific GHC Version
 
 Install **Nightly** (and hoogle docs):

azure-pipelines.yml

@@ -2,3 +2,6 @@ jobs:
 - template: ./.azure/linux-stack.yml
 - template: ./.azure/windows-stack.yml
 - template: ./.azure/macos-stack.yml
+- template: ./.azure/linux-installhs-stack.yml
+- template: ./.azure/windows-installhs-stack.yml
+- template: ./.azure/macos-installhs-stack.yml