Upgrade dependencies

If you want to upgrade the locked versions of specific dependencies, you can pass -u <comma-separated-list> to pipcs or pipc:

[venv] % pipcs -u pre-commit

To upgrade all dependencies in a group or across groups, pass -U:

[venv] % pipcs -U

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% zpy help pipc pipcs

# Compile requirements.txt files from all found or specified requirements.in files (compile).
# Use -h to include hashes, -u dep1,dep2... to upgrade specific dependencies, and -U to upgrade all.
pipc [-h] [-U|-u <pkgspec>[,<pkgspec>...]] [<reqs-in>...] [-- <pip-compile-arg>...]

# Compile, then sync.
# Use -h to include hashes, -u dep1,dep2... to upgrade specific dependencies, and -U to upgrade all.
pipcs [-h] [-U|-u <pkgspec>[,<pkgspec>...]] [--only-sync-if-changed] [<reqs-in>...] [-- <pip-compile-arg>...]

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Upgrade in a subshell

Unlike pipcs, pipup activates a project's venv within a subshell, without affecting the current user shell. Some examples:

% pipup     # like pipcs -U in a subshell
% pipup -i  # interactively choose one or more projects

pipcheckold works the same way, allowing you to check which dependencies are outdated in any number of projects, without affecting your shell's environment.

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% zpy help pipup pipcheckold

# 'pipcs -U' (upgrade-compile, sync) in a venv-activated subshell for the current or specified folders.
# Use --all to instead act on all known projects, or -i to interactively choose.
pipup [--py pypy|current] [--only-sync-if-changed] [--all|-i|<proj-dir>...]

# 'pip list -o' (show outdated) for the current or specified folders.
# Use --all to instead act on all known projects, or -i to interactively choose.
pipcheckold [--py pypy|current] [--all|-i|<proj-dir>...]

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