drwilly / redo

An implementation of djb's redo

redo - An implementation of djb's redo

Installation

Like any self-respecting compiler is written in the language it compiles, redo is used to build itself. This is done using a simplistic POSIX Shell implementation of redo located in the bootstrap/ directory. You might want to edit the file config.sh to suite your needs.

$ bootstrap/redo clean install

Dependencies

• skalibs >= 2.5.0.0 : http://skarnet.org/software/skalibs/

Changes to djb's original design

The "_" wildcard

djb intended the string "default" to be used as a wildcard string, e.g. "default.o.do" when looking for dofiles. This implementation uses both "default" and "_" (preferring the latter), e.g. "_.o.do"

Dependencies

djb mentions three different kinds of dependencies: source-, target- and absent-files. This implementation additionally uses "virtual" in its prereqs to indicate targets that do not produce output.

credits

djb

for his original design notes

similar work

Avery Pennarun's implementation of redo in Python

https://github.com/apenwarr/redo

Chris Forno's implementation of redo in Haskell

https://github.com/jekor/redo

Jonathan de Boyne Pollard's implementation of redo in C++

https://jdebp.eu/Softwares/redo/