The gulcii package

[ Tags: gpl, gui, music, program, sound ] [ Propose Tags ]

GULCII is an untyped lambda calculus interpreter supporting interactive modification of a running program with graphical display of graph reduction.

There are three variants of lambda abstraction: lazy, strict, and copy:

> x . f x x -- x is evaluated lazily with sharing > x ! f x x -- x is evaluated strictly and shared > x ? f x x -- x is copied before any evaluation

There is additional syntax sugar for natural numbers and lists, using

> [0,1,2,3]

There is a small standard library based loosely around the Haskell Prelude, with additions geared towards MIDI generation for live-coding music, implemented using a mechanism similar to Debug.Trace.trace:

> x y . { print : x } y

Quick start:

:load mars

If you have Pure-data and Timidity, try:

timidity -iA -Oj &
pd -alsamidi ~/.cabal/share/gulcii- &
gulcii | pdsend 8765

See also: live-sequencer which has many more features (but no sharing during evaluation).


Dependencies base (>=3 && <6), cairo (>=0.11 && <0.14), containers (>=0.3 && <0.6), filepath (>=1.1 && <1.4), gtk (>=0.11 && <0.14) [details]
License GPL-2
Author Claude Heiland-Allen
Category Sound, Music, GUI
Home page
Source repository head: git clone
this: git clone v0.2.0.3)
Uploaded Mon Mar 9 15:51:57 UTC 2015 by ClaudeHeilandAllen
Distributions NixOS:
Executables gulcii
Downloads 498 total (2 in the last 30 days)
Rating 0.0 (0 ratings) [clear rating]
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Status Docs not available [build log]
Last success reported on 2015-05-19 [all 7 reports]
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