golangci-lint setup script

golangci_lint_setup.sh

#!/usr/bin/env bash
set -euo pipefail

# Step 1: Extract the last element of the module name from go.mod
if [[ ! -f "go.mod" ]]; then
  echo "Error: go.mod not found in current directory." >&2
  exit 1
fi

module_name=$(awk '/^module / {print $2}' go.mod)
if [[ -z "$module_name" ]]; then
  echo "Error: Unable to extract module name." >&2
  exit 1
fi

# Step 2: Create tools directory if missing
mkdir -p tools

# Step 3: Create tools/golangci-lint.mod if it doesn't exist
modfile="tools/golangci-lint.mod"
if [[ ! -f "$modfile" ]]; then
  go mod init -modfile=tools/golangci-lint.mod "${module_name}/tools/golangci-lint"
fi

# Step 4: Add golangci-lint
go get -tool -modfile="$modfile" github.com/golangci/golangci-lint/v2/cmd/[email protected]

# Step 5: Tidy the tools module
go mod tidy -modfile="$modfile"

echo "golangci-lint tool module setup complete."

Assuming you use ~/.local/bin; install by:

curl -fsSL https://gist.githubusercontent.com/maciej/666679a34f755943ffa43d5c3c2854d6/raw/6637cd2ef73aec6fc0ef2e7d78b7d7610ff42067/golangci_lint_setup.sh -o ~/.local/bin/golangci_lint_setup.sh && chmod +x ~/.local/bin/golangci_lint_setup.sh