Skip to content

PEP 751: drop the requirement that installers default to not installing any extras or dependency groups #4300

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
brettcannon merged 2 commits into from
Mar 10, 2025
Merged

PEP 751: drop the requirement that installers default to not installing any extras or dependency groups #4300

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
915bf91
PEP 751: Drop requiring installers to install no extras and/os depend…
brettcannon Mar 10, 2025
4cf822d
Grammar tweak
brettcannon Mar 10, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 6 additions & 8 deletions peps/pep-0751.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -729,8 +729,8 @@ do for *containers*". There are no backwards-compatibility concerns as strings
are containers themselves.

Fourth, a tool MUST raise an error if an extra or dependency group is specified
in a marker expression that does not exist in ``packages.extras`` and
``packages.dependency-groups``, respectively.
in a marker expression that does not exist in ``extras`` or
``dependency-groups``, respectively.

These changes, along with ``packages.extras``/ ``packages.dependency-groups``
and marker expressions' Boolean logic support, allow for expressing arbitrary,
Expand All @@ -751,12 +751,10 @@ installed when:
The same flexibility applies to dependency groups.

How users tell a tool what extras and/or dependency groups they want installed
is up to the tool. Tools MUST default to no extras or dependency groups being
requested by the user if no extras or dependency groups are requested.
Installers MUST support the marker expression syntax additions as
proposed by this PEP. Lockers MAY support writing lock files that utilize the
proposed marker expression syntax additions (i.e. lockers can choose to only
support writing single-use lock files).
is up to the tool. Installers MUST support the marker expression syntax
additions as proposed by this PEP. Lockers MAY support writing lock files that
utilize the proposed marker expression syntax additions (i.e. lockers can choose
to only support writing single-use lock files).


-------
Expand Down