The delta package

[ Tags: data, lgpl, library, program ] [ Propose Tags ]

Delta is a library for detecting file changes in any given directory. The package is written using the sodium FRP library but it also provides a callback based API.

File changes on OS X are based on the FSEvents API that is also used by TimeMachine. On other operating systems the library currently uses recursive descents in directories. I will include inotify for Linux. If someone would like to have a non-polling based API for windows or BSD, I would really like it if anyone would contribute.

The project also contains an executable, delta-run, which allows you to run arbitrary shell commands when a file in a directory (recursively) changes.

$> delta-run --help
Usage: delta-run [-i|--interval INTERVAL] [-v|--verbose] FILE CMD
Available options:
-h,--help                Show this help text
-i,--interval INTERVAL   Run at most every n seconds
-v,--verbose             Print extra output
FILE                     The directory that is watched
CMD                      The command to run

For example you could use delta-run to rebuild your project everytime the source changes like this:

delta-run ./src "cabal build"

Properties

Versions 0.1.0.0, 0.1.0.1, 0.1.2.0, 0.2.0.0, 0.2.1.0, 0.2.1.1, 0.2.1.2
Dependencies base (>=4.6 && <4.9), containers (>=0.5), delta, directory (>=1.2), filepath (>=1.3), hfsevents (>=0.1.5), optparse-applicative (>=0.10), process (>=1.2), sodium (>=0.11), time (>=1.5) [details]
License LGPL-3
Author Christof Schramm
Maintainer christof.schramm@campus.lmu.de
Category Data
Home page https://github.com/kryoxide/delta
Source repository head: git clone https://github.com/kryoxide/delta.git
Uploaded Thu Jul 23 17:23:29 UTC 2015 by muzzle
Updated Thu Jul 23 21:07:40 UTC 2015 by muzzle to revision 2
Distributions NixOS:0.2.1.2
Executables delta-run, delta-cli
Downloads 867 total (54 in the last 30 days)
Rating (no votes yet) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2015-07-23 [all 1 reports]
Hackage Matrix CI

Modules

[Index]

Flags

NameDescriptionDefaultType
build_fs_events

Build in FSEvents support (OS X)

EnabledAutomatic

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

Downloads

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

For package maintainers and hackage trustees