actionlint vs HLint

actionlint is a static checker for GitHub Actions workflow files. It flags unexpected or missing syntax keys and checks `${{ }}` expressions for semantic issues such as missing properties and mismatched types. It validates action inputs and outputs, along with inputs, outputs, and secrets used in reusable workflows and workflow calls. Security checks cover script injection risks involving untrusted inputs and hard-coded credentials. For scripts in `run:` steps, it can use ShellCheck and Pyflakes integrations, which can be disabled. Installation options documented by the project include prebuilt binaries, Docker, source builds, a CI download script, and package managers. Its browser playground runs through WebAssembly and states that it does not send data outside the browser. The project also describes integrations with code review tools, CI and editors, provides Go APIs, and allows configuration of self-hosted runner labels, configuration variables, and file-specific ignore patterns. actionlint is free and MIT-licensed, with a command-line tool and browser playground. The listed platforms include Linux, macOS, Windows, web, and self-hosted use.

HLint is free software for analyzing Haskell source and suggesting possible improvements. It can point out alternative functions, simpler expressions, and redundant code. Every hint identifies the file and line, gives a severity and description, shows the code found, and proposes a replacement. Projects can configure behavior in a .hlint.yaml file, adding custom hints or ignoring selected suggestions. The --refactor flag applies some recommendations and requires the refactor executable from the apply-refact package on PATH. The --report flag creates an interactive HTML findings report. HLint runs on Linux, macOS, and Windows, with listed integrations including editor plugins, Haskell Language Server, ghc-mod, Intero, a GHC source plugin, Code Climate, and GitHub Actions. It analyzes one module at a time without type or scope knowledge. Version 3.10 is listed as released February 2, 2024. It is distributed under a BSD-style license.