Revert "ci: improvements to building in pipeline"

This reverts commit d8b232b546.

.gitlab-ci.yml

@@ -1,3 +1,6 @@
+# copied a good chunk from my bfom config
+image: rust:latest
+
 stages:
   - lint
   - build
@@ -11,15 +14,17 @@ variables:
   - nix --extra-experimental-features 'nix-command flakes'  profile install nixpkgs#attic-client
   - attic login skynet https://nix-cache.skynet.ie/ $CACHE_KEY
   - attic use skynet-cache
-  - attic watch-store skynet-cache &
 
-.build_template: &nix
-  tags:
-    - nix
-  before_script:
-    - *scripts_cache
-      
-.rules_template: &rules
+# clippy and fmt are magic
+# runs on all commits/branches
+lint-clippy:
+  stage: lint
+  script:
+    - rustup component add clippy
+    - rustc --version
+    - cargo version
+    - cargo clippy
+    - cargo test --verbose
   rules:
     - if: $CI_COMMIT_TAG
       when: never
@@ -28,28 +33,31 @@ variables:
         - Cargo.*
       when: always
 
-# clippy and fmt are magic
-# runs on all commits/branches
-lint-clippy:
-  stage: lint
-  <<: *nix
-  <<: *rules
-  script:
-    - nix --extra-experimental-features "nix-command flakes" build --verbose .#clippy
-
 lint-fmt:
   stage: lint
-  <<: *nix
-  <<: *rules
   script:
-    - nix --extra-experimental-features "nix-command flakes" build --verbose .#fmt
+    - rustup component add rustfmt
+    - rustc --version
+    - cargo version
+    - cargo fmt -- --check
+  rules:
+    - if: $CI_COMMIT_TAG
+      when: never
+    - changes:
+        - src/**/*
+        - Cargo.*
+      when: always
 
 
 # has to actually compile
 build:
   stage: build
-  <<: *nix
+  tags:
+    - nix
+  before_script:
+    - *scripts_cache
   script:
+    - attic watch-store skynet-cache &
     - nix --extra-experimental-features "nix-command flakes" build --verbose
   rules:
     - if: $CI_COMMIT_TAG