Refactor CI config and add Windows support

This splits up the CI configuration into separate files, and adds
support for running the tests and releases on Windows. Tests are no
longer run on Rust nightly, as this does not add any value to the test
suite (any more).

.gitlab-ci.yml

 ---
-
 variables:
   CARGO_HOME: $CI_PROJECT_DIR/.cargo
   DEBIAN_FRONTEND: noninteractive
   AWS_REGION: eu-west-1
+  # Ensure Windows builds fail when Powershell detects an error.
+  ErrorActionPreference: 'STOP'
 stages:
   - test
-  - build
   - test-runtime
   - release
   - post-release
-dependency_scanning:
-  image: registry.gitlab.com/inko-lang/development-docker-images:cargo-audit
-  stage: test
-  before_script:
-    - cargo --version
-    - rustc --version
-    - ruby --version
-  script:
-    - ./scripts/audit.rb
-  artifacts:
-    when: always
-    expire_in: 1 month
-    reports:
-      dependency_scanning: gl-dependency-scanning-report.json
-    paths:
-      - gl-dependency-scanning-report.json
-  allow_failure: true
-  cache:
-    key: cargo-audit
-    paths:
-      - .cargo
-
-test:compiler:linux:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: test
-  before_script:
-    - cd compiler
-    - ruby --version
-    - gem --version
-    - bundle --version
-    - bundle install --path vendor --retry=3
-  script:
-    - make test
-  cache:
-    paths:
-      - compiler/vendor/ruby
-
-test:compiler:macos:
-  stage: test
-  tags:
-    - macos
-  before_script:
-    - cd compiler
-    - ruby --version
-    - gem --version
-    - bundle --version
-    - bundle install --path vendor --retry=3
-  script:
-    - gmake test
-  cache:
-    key: macos
-    paths:
-      - compiler/vendor/ruby
-
-test:ivm-nightly:linux:
-  image: registry.gitlab.com/inko-lang/development-docker-images:rust-nightly
-  stage: test
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - make test
-  cache:
-    paths:
-      - .cargo
-      - vm/target
-
-test:ivm-stable:linux:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: test
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - make test
-  cache:
-    paths:
-      - .cargo
-      - vm/target
-
-test:ivm-nightly:macos:
-  stage: test
-  tags:
-    - macos
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - rustup run nightly gmake test
-  cache:
-    key: macos
-    paths:
-      - .cargo
-      - vm/target
-
-test:ivm-stable:macos:
-  stage: test
-  tags:
-    - macos
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - gmake test
-  cache:
-    key: macos
-    paths:
-      - .cargo
-      - vm/target
-
-lint:clippy:
-  image: registry.gitlab.com/inko-lang/development-docker-images:rust-stable
-  stage: test
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - make clippy
-  cache:
-    paths:
-      - .cargo
-      - vm/target
-
-lint:rustfmt:
-  image: registry.gitlab.com/inko-lang/development-docker-images:rust-stable
-  stage: test
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-    - rustfmt --version
-  script:
-    - make rustfmt-check
-
-lint:versions:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: test
-  script:
-    - bash scripts/versions.sh
-
-build:ivm:linux:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: build
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - make release
-    - mv target/release/ivm ../ivm
-    - strip ../ivm
-  cache:
-    paths:
-      - .cargo
-      - vm/target
-  artifacts:
-    expire_in: 1 hour
-    paths:
-      - ivm
-
-build:ivm:macos:
-  stage: build
-  tags:
-    - macos
-  before_script:
-    - cd vm
-    - rustc --version
-    - cargo --version
-  script:
-    - gmake release
-    - mv target/release/ivm ../ivm
-    - strip ../ivm
-  cache:
-    key: macos
-    paths:
-      - .cargo
-      - vm/target
-  artifacts:
-    expire_in: 1 hour
-    paths:
-      - ivm
-
-test:runtime:linux:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: test-runtime
-  before_script:
-    - ruby --version
-    - ./ivm --version
-    - ./ivm --features
-  script:
-    - env RUBYLIB=./compiler/lib ./compiler/bin/inko-test -d runtime --vm ./ivm
-  dependencies:
-    - build:ivm:linux
-
-test:runtime:macos:
-  stage: test-runtime
-  tags:
-    - macos
-  before_script:
-    - ruby --version
-    - ./ivm --version
-    - ./ivm --features
-  script:
-    - env RUBYLIB=./compiler/lib ./compiler/bin/inko-test -d runtime --vm ./ivm
-  dependencies:
-    - build:ivm:macos
-
-release:source:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: release
-  script:
-    - make release-source
-  only:
-    - tags
-
-release:compiled:linux-gnu:
-  image: registry.gitlab.com/inko-lang/development-docker-images:rust-stable
-  stage: release
-  before_script:
-    - ruby --version
-    - rustc --version
-    - cargo --version
-    - aws --version
-  script:
-    - make release-compiled
-  only:
-    - tags
-  cache:
-    paths:
-      - .cargo
-      - vm/target
-
-release:compiled:macos:
-  stage: release
-  tags:
-    - macos
-  before_script:
-    - ruby --version
-    - rustc --version
-    - cargo --version
-    - aws --version
-  script:
-    - gmake release-compiled SHA256SUM=gsha256sum
-  only:
-    - tags
-  cache:
-    key: macos
-    paths:
-      - .cargo
-      - vm/target
-
-post-release:manifest:
-  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
-  stage: post-release
-  script:
-    - make rebuild-manifest
-  only:
-    - tags
+include:
+  - local: .gitlab/ci/windows.yml
+  - local: .gitlab/ci/macos.yml
+  - local: .gitlab/ci/linux.yml
+  - local: .gitlab/ci/lints.yml
+  - local: .gitlab/ci/releases.yml

.gitlab/ci/lints.yml

+---
+dependency_scanning:
+  image: registry.gitlab.com/inko-lang/development-docker-images:cargo-audit
+  stage: test
+  before_script:
+    - cargo --version
+    - rustc --version
+    - ruby --version
+  script:
+    - ./scripts/audit.rb
+  artifacts:
+    when: always
+    expire_in: 1 day
+    reports:
+      dependency_scanning: gl-dependency-scanning-report.json
+    paths:
+      - gl-dependency-scanning-report.json
+  allow_failure: true
+
+lint:clippy:
+  image: registry.gitlab.com/inko-lang/development-docker-images:rust-stable
+  stage: test
+  before_script:
+    - cd vm
+    - rustc --version
+    - cargo --version
+  script:
+    - make clippy
+  cache:
+    paths:
+      - .cargo
+      - vm/target
+
+lint:rustfmt:
+  image: registry.gitlab.com/inko-lang/development-docker-images:rust-stable
+  stage: test
+  before_script:
+    - cd vm
+    - rustc --version
+    - cargo --version
+    - rustfmt --version
+  script:
+    - make rustfmt-check
+
+lint:versions:
+  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
+  stage: test
+  script:
+    - bash scripts/versions.sh

.gitlab/ci/linux.yml

+---
+test:compiler:linux:
+  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
+  stage: test
+  before_script:
+    - cd compiler
+    - ruby --version
+    - gem --version
+    - bundle --version
+    - bundle install --path vendor --retry=3
+  script:
+    - make test
+  cache:
+    paths:
+      - compiler/vendor/ruby
+
+test:ivm:linux:
+  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
+  stage: test
+  before_script:
+    - cd vm
+    - rustc --version
+    - cargo --version
+  script:
+    - make test
+  cache:
+    paths:
+      - .cargo
+      - vm/target
+
+test:runtime:linux:
+  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
+  stage: test-runtime
+  before_script:
+    - ruby --version
+    - rustc --version
+    - cargo --version
+  script:
+    - make -C vm release
+    - env RUBYLIB=./compiler/lib ./compiler/bin/inko-test -d runtime --vm ./vm/target/release/ivm
+  cache:
+    paths:
+      - .cargo
+      - vm/target
+
+release:compiled:linux-gnu:
+  image: registry.gitlab.com/inko-lang/development-docker-images:rust-stable
+  stage: release
+  before_script:
+    - ruby --version
+    - rustc --version
+    - cargo --version
+    - aws --version
+  script:
+    - make release-compiled
+  only:
+    - tags
+  cache:
+    paths:
+      - .cargo
+      - vm/target

.gitlab/ci/macos.yml

+---
+test:compiler:macos:
+  stage: test
+  tags:
+    - macos
+  before_script:
+    - cd compiler
+    - ruby --version
+    - gem --version
+    - bundle --version
+    - bundle install --path vendor --retry=3
+  script:
+    - gmake test
+  cache:
+    key: macos
+    paths:
+      - compiler/vendor/ruby
+
+test:ivm:macos:
+  stage: test
+  tags:
+    - macos
+  before_script:
+    - cd vm
+    - rustc --version
+    - cargo --version
+  script:
+    - gmake test
+  cache:
+    key: macos
+    paths:
+      - .cargo
+      - vm/target
+
+test:runtime:macos:
+  stage: test-runtime
+  tags:
+    - macos
+  before_script:
+    - ruby --version
+    - rustc --version
+    - cargo --version
+  script:
+    - gmake -C vm release
+    - env RUBYLIB=./compiler/lib ./compiler/bin/inko-test -d runtime --vm ./vm/target/release/ivm
+  cache:
+    key: macos
+    paths:
+      - .cargo
+      - vm/target
+
+release:compiled:macos:
+  stage: release
+  tags:
+    - macos
+  before_script:
+    - ruby --version
+    - rustc --version
+    - cargo --version
+    - aws --version
+  script:
+    - gmake release-compiled SHA256SUM=gsha256sum
+  only:
+    - tags
+  cache:
+    key: macos
+    paths:
+      - .cargo
+      - vm/target

.gitlab/ci/releases.yml

+---
+release:source:
+  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
+  stage: release
+  script:
+    - make release-source
+  only:
+    - tags
+
+post-release:manifest:
+  image: registry.gitlab.com/inko-lang/development-docker-images:alpine
+  stage: post-release
+  script:
+    - make rebuild-manifest
+  only:
+    - tags

.gitlab/ci/windows.yml

+---
+test:compiler:windows:
+  stage: test
+  tags:
+    - windows
+  before_script:
+    - cd compiler
+    - ruby --version
+    - gem --version
+    - bundle --version
+    - bundle install --path vendor --retry=3
+  script:
+    - C:/msys make test
+  cache:
+    key: windows
+    paths:
+      - compiler/vendor/ruby
+
+test:ivm:windows:
+  image: windows:1809
+  stage: test
+  tags:
+    - windows
+  before_script:
+    - cd vm
+    - rustc --version
+    - cargo --version
+  script:
+    - C:/msys make test
+  cache:
+    key: windows
+    paths:
+      - .cargo
+      - vm/target
+
+test:runtime:windows:
+  stage: test-runtime
+  tags:
+    - windows
+  before_script:
+    - ruby --version
+    - rustc --version
+    - cargo --version
+  script:
+    - C:/msys make -C vm release
+    - ruby -I ./compiler/lib ./compiler/bin/inko-test -d runtime --vm ./vm/target/release/ivm.exe
+  cache:
+    key: windows
+    paths:
+      - .cargo
+      - vm/target
+
+release:compiled:windows:
+  stage: release
+  tags:
+    - windows
+  before_script:
+    - ruby --version
+    - rustc --version
+    - cargo --version
+    - C:/msys aws --version
+  script:
+    - C:/msys make release-compiled
+  only:
+    - tags
+  cache:
+    key: windows
+    paths:
+      - .cargo
+      - vm/target

appveyor.yml

----
-image: Visual Studio 2017
-build: off
-version: '{build}'
-
-platform:
-  - x64
-
-notifications:
-  - provider: Email
-    on_build_success: false
-    on_build_failure: false
-    on_build_status_changed: false
-
-environment:
-  matrix:
-    - TARGET: x86_64-pc-windows-gnu
-      CHANNEL: nightly
-    - TARGET: x86_64-pc-windows-gnu
-      CHANNEL: stable
-
-install:
-  - curl -sSf -o rustup-init.exe https://win.rustup.rs
-  - rustup-init.exe --default-host %TARGET% --default-toolchain %CHANNEL% -y
-  - set PATH=C:\Users\appveyor\.cargo\bin;%PATH%
-  - set PATH=C:\Ruby24-x64\bin;%PATH%
-  - set PATH=C:\Python37-x64;%PATH%
-  - set PATH=C:\msys64\usr\bin;%PATH%
-  # Install dependencies for FFI.
-  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S automake autoconf texinfo clang"
-  # Install the dependencies of the compiler.
-  - cd compiler
-  - bundle install --path vendor --retry=3
-  - cd ..
-
-cache:
-  - C:\Users\appveyor\.cargo
-  - compiler\vendor
-  - vm\target
-
-before_test:
-  - rustc --version
-  - cargo --version
-  - ruby --version
-
-test_script:
-  - C:\msys64\usr\bin\env MSYSTEM=MINGW64 C:\msys64\usr\bin\bash -l %APPVEYOR_BUILD_FOLDER%\scripts\appveyor.sh

scripts/appveyor.sh

-#!/usr/bin/env bash
-
-set -e
-
-cd "$APPVEYOR_BUILD_FOLDER" || exit 1
-
-echo 'Running compiler tests...'
-make -C compiler test
-
-echo 'Running VM tests...'
-make -C vm test
-
-echo 'Building the VM...'
-make -C vm release
-
-# Run the runtime tests
-ruby -I ./compiler/lib ./compiler/bin/inko-test -d runtime \
-    --vm vm/target/release/ivm