Refactor package manager handling #1640
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Previously, the buildpack didn't track which package manager was being used, but instead had a number of fragile file presence checks and env vars like `SKIP_PIP_INSTALL` scattered throughout (which won't work when the package manager isn't a binary choice). As such, package manager handling has been refactored to allow for more easily adding Poetry support later. This also continues the gradual migration of code from sourced `bin/steps/` scripts, to functions declared in `lib/`. As part of this, I've started namespacing the lib functions using the `module::fn_name()` pattern described in: https://google.github.io/styleguide/shellguide.html#function-names On the most part I've tried to keep this refactoring a no-op (aside from fixes for a few quirks/bugs found whilst working on this). Longer term we will be deprecating/sunsetting several features, such as the `setup.py` fallback, using Pipenv without a lockfile, and support for apps that have ended up with the files for multiple package managers. GUS-W-16811078.
colincasey
approved these changes
Sep 24, 2024
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Looks okay to me @edmorley. Just had a couple of minor comments for you to respond to.
Follow-up to #1638.
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Previously, the buildpack didn't track which package manager was being used, but instead had a number of fragile file presence checks and env vars like
SKIP_PIP_INSTALLscattered throughout (which won't work when the package manager isn't a binary choice).As such, package manager handling has been refactored to allow for more easily adding Poetry support later.
This also continues the gradual migration of code from sourced
bin/steps/scripts, to functions declared inlib/. As part of this, I've started namespacing the lib functions using themodule::fn_name()pattern described in:https://google.github.io/styleguide/shellguide.html#function-names
On the most part I've tried to keep this refactoring a no-op (aside from fixes for a few quirks/bugs found whilst working on this). Longer term we will be deprecating/sunsetting several features, such as the
setup.pyfallback, using Pipenv without a lockfile, and support for apps that have ended up with the files for multiple package managers.Prep for #796 / #932.
GUS-W-16811078.