The fast-tags package

[Tags:bsd3, library, program, test]

Yet another tags program. Like hasktags, it uses its own parser rather than haskell-src or haskell-src-exts, so it's fast. It understands hsc and literate haskell.

In addition, it will load an existing tags file and merge generated tags.

The intent is to bind it to vim's BufWrite autocommand to automatically keep the tags file up to date. This only works for files changed by the editor of course, so you may want to bind 'rm tags' to a pull posthook.


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Versions 0.0.1, 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 1.0, 1.0.1, 1.1.0, 1.1.1, 1.2
Change log
Dependencies array, async, base (>=3 && <5), bytestring, containers, cpphs (>1.18), deepseq, directory, fast-tags, filepath, mtl (>=2.1), text (< || >, utf8-string [details]
License BSD3
Author Evan Laforge
Maintainer Evan Laforge <>
Stability stable
Category Haskell, Development
Home page
Source repository head: git clone git://
Uploaded Sat Jan 2 10:31:22 UTC 2016 by EvanLaforge
Distributions NixOS:1.2
Downloads 1993 total (20 in the last 30 days)
0 []
Status Docs not available [build log]
Last success reported on 2016-01-02 [all 1 reports]


  • Control
    • Monad
      • Control.Monad.EitherK
  • FastTags
  • Lexer
  • LexerTypes
  • Token


fastSpend more time optimizing a program (may yield up to 25% speedup)DisabledAutomatic

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Maintainer's Corner

For package maintainers and hackage trustees

Readme for fast-tags

Readme for fast-tags-1.2

See vimrc for an example of how to keep the tags file up to date


- \ continuation in strings is not parsed correctly.