initial version of lint subcommand

.github/workflows/ci.yaml

@@ -131,6 +131,10 @@ jobs:
           save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: "Install Rust toolchain"
         run: rustup show
+      # The Binary-package Parity tests build the lintian recipes with
+      # dpkg-buildpackage, whose rules call debhelper.
+      - name: "Install build tools for the Parity tests"
+        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends debhelper fakeroot
       - name: "Run tests"
         run: cargo test
 

.gitignore

@@ -32,7 +32,8 @@ src/*/*.lock
 /test
 /build-area
 /build-debmagic
-*.snap
+# snapcraft output (repo root only; insta snapshots in src/**/snapshots/ are tracked)
+/*.snap
 
 # ides
 .idea

.pre-commit-config.yaml

@@ -3,8 +3,11 @@ repos:
   rev: v0.14.6
   hooks:
     - id: ruff-check
-      args: [ --fix ]
+      args: [--fix, --config, pyproject.toml]
+      exclude: ^packages/debmagic/tests/
     - id: ruff-format
+      args: [--config, pyproject.toml]
+      exclude: ^packages/debmagic/tests/
 - repo: local
   hooks:
     - id: ty