[Haskell-cafe] [ANN] csound-expression-5.4.4 - music and sound design framework

[Anton Kholomiov]

I'd like to announce a new release of [csound-expression](
https://github.com/spell-music/csound-expression) on [hackage](
https://hackage.haskell.org/package/csound-expression).
The CE is a music framework for haskell with focus on ease of use and
feature rich as it rides on top of the powerful audio programming language
Csound. It is a DSL to build Csound programs.  So the library embeds Csound
in Haskell.

It's a bug fix release. Many algorithms in the low-level renderer
csound-expression-dynamic were rewritten and fixed. In the previous version
unfortunately there were severe bugs in effectful expressions and in
if-then-else blocks. But now they are fixed.

Also I've updated the library to include new Csound opcodes (audio
processing units from 6.18 version).

Happy music making with Haskell!

About the future of the csound-expression:

I've started the implementation of a more tiny csound-core package. It
offers a missing layer of low-level building of type-safe Csound
expressions. In the previous version I've created lots of abstractions to
make music making more pleasant for FP style. But this layering makes it
kind of hard to debug rendered code. So I'd like to create a tiny
imperative style core that will allow me to debug produced Csound code. And
the rest of the code should be expressed in terms of this library. I'm not
there yet. I've built the core library and it turned out very well. But now
I need to rewrite FP abstractions on top of it. I'm not there yet. But I
hope that gradually I will make it.

Also I plan to deprecate GUI features as FLTK was deprecated in Csound and
it's not packaged with Csound anymore. I think maybe it would be better to
substitute them with JS+OSC.

github: https://github.com/spell-music/csound-expression
hackage: https://hackage.haskell.org/package/csound-expression
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