hfmt: Haskell source code formatter

[ language, library, mit, program ] [ Propose Tags ]
Versions,,,,, 0.1.0, 0.1.1, 0.2.0, 0.2.1
Dependencies ansi‑wl‑pprint, base (>=4.8 && <5), bytestring, Cabal, conduit, conduit‑combinators, Diff, directory, exceptions, filepath, haskell‑src‑exts (<1.20), hfmt, hindent (==5.*), hlint (==2.*), HUnit, optparse‑applicative, path, path‑io, pretty, stylish‑haskell (==0.8.*), text, transformers, yaml [details]
License MIT
Author Daniel Stiner
Maintainer Daniel Stiner <daniel.stiner@gmail.com>
Category Language
Home page http://github.com/danstiner/hfmt
Bug tracker http://github.com/danstiner/hfmt/issues
Source repo head: git clone git://github.com:danstiner/hfmt.git
Uploaded by danielstiner at Mon Feb 19 03:16:43 UTC 2018
Distributions NixOS:0.2.1
Executables hfmt
Downloads 1460 total (47 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by rule of succession]
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Status Docs available [build log]
Last success reported on 2018-02-19 [all 1 reports]
Hackage Matrix CI

Inspired by gofmt. Built using hlint, hindent, and stylish-haskell.

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Maintainer's Corner

For package maintainers and hackage trustees

Readme for hfmt-0.2.1

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Hackage license Build Status

hfmt is a tool for formatting Haskell programs. Currently it is simply a gofmt style wrapper of the excellent tools hlint, hindent, and stylish-haskell.


with stack

$ stack install hfmt

with cabal

$ cabal install hfmt


Check all Haskell source under the current directory:


Overwrite files with formatting suggestions:

hfmt -w

Help text

λ hfmt --help
hfmt - format Haskell programs

Usage: hfmt [-d|--print-diffs] [FILE]
  Reformats Haskell source files by applying HLint, hindent, and

Available options:
  -h,--help                Show this help text
  -d,--print-diffs         If a file's formatting is different, print a diff.
  -s,--print-sources       If a file's formatting is different, print its
  -l,--print-paths         If a file's formatting is different, print its path.
  -w,--write-sources       If a file's formatting is different, overwrite it.
  FILE                     Explicit paths to process.
                            - A single '-' will process standard input.
                            - Files will be processed directly.
                            - Directories will be recursively searched for source files to process.
                            - .cabal files will be parsed and all specified source directories and files processed.
                            - If no paths are given, the current directory will be searched for .cabal files to process, if none are found the current directory will be recursively searched for source files to process.

Exit Codes:
  0 = No error
  1 = Encountered I/O or other operational error
  2 = Failed to parse a source code file
  3 = Source code was parsed but cannot be formatted properly
  4 = Formatted code differs from existing source (--print-diffs only)