DJB Redo

Created: 2020-11-15T16:46:58-06:00

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DJB Redo is the original spec for "redo." But you will need apenwarr/redo to actually use it.

• redo: always rebuild a target
• redo-ifchange: rebuild target if out of date

• Build to new temp file and replace: otherwise the file on the system is trunacated, out of date, incorrect. On system failure it looks like the unfinished file still exists.
• Use normal binaries to talk to the system: redo-ifchange is just an executable run from shell scripts.
• Let shell scripts handle any special logic: they run redo-ifchange and friends as needed.
• Put environment configs in files, add redo-ifchange before importing them.