ci: merge lint and test pipeline

The lint pipeline spent ~7 minutes downloading and compiling
and only a few seconds actually checking the style.
The former is fully redundandt with what’s done during test anyway.

.woodpecker/lint.yml

@@ -1,52 +0,0 @@
-labels:
-  platform: linux/amd64
-
-variables:
-  - &setup-hex "mix local.hex --force && mix local.rebar --force"
-  - &on-release
-    when:
-      event:
-        - push
-        - tag
-      branch:
-        - develop
-        - stable
-        - refs/tags/v*
-        - refs/tags/stable-*
-  - &on-stable
-    when:
-      event:
-        - push
-        - tag
-      branch:
-        - stable
-        - refs/tags/stable-*
-  - &on-point-release
-    when:
-      event:
-        - push
-      branch:
-        - develop
-        - stable
-  - &on-pr-open
-    when:
-      event:
-        - pull_request
-
-  - &tag-build "export BUILD_TAG=$${CI_COMMIT_TAG:-\"$CI_COMMIT_BRANCH\"} && export PLEROMA_BUILD_BRANCH=$BUILD_TAG"
-
-  - &clean "(rm -rf release || true) && (rm -rf _build || true) && (rm -rf /root/.mix)"
-  - &mix-clean "mix deps.clean --all && mix clean"
-
-steps:
-  lint:
-    image: akkoma/ci-base:1.18-otp27
-    <<: *on-pr-open
-    environment:
-      MIX_ENV: test
-    commands:
-      - mix local.hex --force
-      - mix local.rebar --force
-      - mix deps.get
-      - mix compile
-      - mix format --check-formatted

.woodpecker/test.yml

@@ -1,16 +1,15 @@
 labels:
   platform: linux/amd64
 
-depends_on:
-  - lint
-
 matrix:
   # test the lowest and highest versions
   include:
     - ELIXIR_VERSION: 1.14
       OTP_VERSION: 25
+      LINT: NO
     - ELIXIR_VERSION: 1.18
       OTP_VERSION: 27
+      LINT: YES
 
 variables:
   - &setup-hex "mix local.hex --force && mix local.rebar --force"
@@ -70,11 +69,13 @@ steps:
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres
       DB_HOST: postgres
+      LINT: ${LINT}
     commands:
       - mix local.hex --force
       - mix local.rebar --force
       - mix deps.get
       - mix compile
+      - test "${LINT}" = "NO" || mix format --check-formatted
       - mix ecto.drop -f -q
       - mix ecto.create
       - mix ecto.migrate