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Line Hyper-eXpander

logo

The LHX is dual:

  • it is a tool to do some work
  • it is a sandbox to learn how to program in the Haskell language

Idea

The central idea is to make possible to transform some text line-by-line using a simple templating language: rename a group of files, generate HTML lists and tables, etc. More info you can find in the project's wiki.

Example

$ ls -l /tmp/files
total 0
-rw-r--r-- 1 user 0 2022-10-04 09:02 one
-rw-r--r-- 1 user 0 2022-10-04 09:02 three
-rw-r--r-- 1 user 0 2022-10-04 09:02 two
$ ls -l /tmp/files | lhx --skip-errors -e 'mv $7 $5_$7'
mv one 2022-10-04_one
mv three 2022-10-04_three
mv two 2022-10-04_two

Nix

Enter build environment (with all the dependencies and Cabal):

nix develop

Run one-liner

nix run .#<fully qualified Cabal component name>

Example: nix run .#lhx:exe:lhx-tui

Run without cloning

nix run github:ruHaskell-learn/lhx#lhx:exe:lhx-tui