Split calls to test/test.sh into several buildkite jobs

Motivations:

* Take advantage of parallel jobs execution ;
* Identify faster what is the test that is failing ;
* Don't have a failing test hidden behind a previous sequential test fail.

Author: yvan-sraka

.buildkite/pipeline.yml

@@ -1,6 +1,76 @@
 steps:
-  - label: 'Run tests with ghc8107'
-    command: "./test/tests.sh ghc8107"
+  - label: 'Run tests with ghc8107: Running the nix-build tests...'
+    command: "./test/tests.sh ghc8107 nix-build"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Running the unit tests...'
+    command: "./test/tests.sh ghc8107 unit-tests"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that a nix-shell works for runghc...'
+    command: "./test/tests.sh ghc8107 runghc"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that a nix-shell works for cabal...'
+    command: "./test/tests.sh ghc8107 cabal"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that a nix-shell works for cabal (doExactConfig component)...'
+    command: "./test/tests.sh ghc8107 cabal-doExactConfig"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that a nix-shell works for a project with test-suite build-tools and benchmarks...'
+    command: "./test/tests.sh ghc8107 tests-benchmarks"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that a nix-shell works for a multi-target project...'
+    command: "./test/tests.sh ghc8107 multi-target"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking shellFor works for a cabal project, multiple packages...'
+    command: "./test/tests.sh ghc8107 shellFor-single-package"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking shellFor works for a cabal project, single package...y'
+    command: "./test/tests.sh ghc8107 shellFor-multiple-package"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking shellFor works for a cabal project, single package...'
+    command: "./test/tests.sh ghc8107 shellFor-hoogle"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking shellFor does not depend on given packages...y'
+    command: "./test/tests.sh ghc8107 shellFor-not-depends"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking the maintainer scripts...y'
+    command: "./test/tests.sh ghc8107 maintainer-scripts"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that plan construction works with extra Hackages...'
+    command: "./test/tests.sh ghc8107 plan-extra-hackages"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: Checking that package with extra Hackages can be build...'
+    command: "./test/tests.sh ghc8107 build-extra-hackages"
+    agents:
+      system: x86_64-linux
+
+  - label: 'Run tests with ghc8107: End-2-end test of hix project initialization and flakes development shell ...'
+    command: "./test/tests.sh ghc8107 hix"
     agents:
       system: x86_64-linux
 
@@ -56,3 +126,4 @@ steps:
       - "HIX_DIR=$(mktemp -d) nix run .#hix --accept-flake-config -- run github:haskell/cabal/3.8#cabal-install:exe:cabal --accept-flake-config --override-input haskellNix . -- --version"
     agents:
       system: x86_64-linux
+