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pixa/script/lint
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Run all linting in Docker through script/lint (closes #104)
make lint calls script/lint, the only way golangci-lint is run. Inside a
container it runs the linter; anywhere else it builds Dockerfile.lint,
whose last step runs script/lint again. Both Dockerfiles set
container=docker to mark the container, since /.dockerenv is missing in
build steps and present on hosts that are themselves containers. The
Dockerfile lint stage runs make lint.

A new CACHEBUST build-arg on every run keeps the lint step from being
served from cache; a tmpfs mount keeps Go's and golangci-lint's caches
out of that step's layer, so runs do not pile up build cache.
script/bootstrap and the nix-shell package lists no longer carry
golangci-lint. golangci-lint config verify is not run: it fetches its
schema over an unpinned live HTTPS call.

Model: opus-4-8 (implementation); opus-5-5 (rework)
2026-09-28 14:27:35 +02:00

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#!/bin/sh
# script/lint: run golangci-lint over the whole tree. This is the only
# way the linter is run, everywhere; it is never installed on the host.
#
# Inside a container it runs the linter. Anywhere else it builds
# Dockerfile.lint, whose last step runs this script again inside that
# container.
#
# Dockerfile.lint and the Dockerfile lint stage set container=docker
# (the systemd convention for marking a container) to say where we are.
# /.dockerenv cannot: it is missing inside build steps, and present on
# hosts that are themselves containers.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
if [ "${container:-}" = docker ]; then
# `golangci-lint config verify` is not run: it fetches its JSON
# schema over an unpinned live HTTPS call, which REPO_POLICIES.md
# forbids.
echo "Running linter..."
golangci-lint run --config .golangci.yml ./...
else
# A new CACHEBUST on every run means the lint step is never
# served from cache (see Dockerfile.lint). The cacheonly output
# leaves no image behind.
docker build \
--progress=plain \
--build-arg CACHEBUST="$(date +%s)-$$" \
--output=type=cacheonly \
-f Dockerfile.lint .
fi
}
main "$@"