Streamly Ecosystem

Streamly ecosystem consists of packages built on top of streamly to provide higher level functionality.

streamly-process

Use operating system (OS) commands in Haskell programs as if they were native Haskell functions, by treating their inputs and outputs as Haskell streams. This allows you to write high-level Haskell scripts that can perform tasks similar to shell scripts, but with C-like performance, and with strong safety guarantees, refactorability, and modularity.

The shell command echo "hello world" | tr [a-z] [A-Z] can be written as follows using this package:

>>> :{
   Command.toBytes [str|echo "hello world"|] -- Stream IO Word8
 & Command.pipeBytes [str|tr [a-z] [A-Z]|]   -- Stream IO Word8
 & Stream.fold Stdio.write                   -- IO ()
:}
HELLO WORLD

streamly-coreutils

https://github.com/composewell/streamly-coreutils

GNU coreutils utilities implemented as Haskell functions using streamly. For example: test, cp, ls, ln, mv, rm, touch, mkdir, pwd, cd, stat, readlink, which, sleep etc.

streamly-statistics

Similar to the statistics package but with streaming APIs.

streamly-lz4

Streaming APIs for lz4 compression and decompression.

Compatibility Packages

Streamly can interwork with other packages in the Haskell ecosystem providing similar functionality. These packages enable the interconversion.

streamly-bytestring

Package for converting streamly Array type to the bytestring package’s ByteString type and vice-versa.

streamly-text

Package for converting streamly Array type to the text package’s Text type and vice-versa.

streamly-filepath

Package for converting streamly Path type to the filepath package’s OsPath type and vice-versa.