Update #1918 to handle https://github.com/pypa/pip/pull/12536, where pip
removed their python minor entrypoint. The pip test is semi-functional
since it builds pip from source instead of using a wheel with the wrong
entrypoint, we have to update it when this pip version has a release.
Closes#1593.
Address a few pedantic lints
lints are separated into separate commits so they can be reviewed
individually.
I've not added enforcement for any of these lints, but that could be
added if desirable.
Users expect pip to have `pip`, `pip3` and `pip3.x` entrypoints. But pip
is a universal wheel, so it contains the `pip3.x` entrypoint where it
was built on. To fix this, pip special cases itself when installing
(3898741e29/src/pip/_internal/operations/install/wheel.py (L283)),
replacing the wheel entrypoint with one for the current version. We now
do the same.
Fixes#1593
This PR massively speeds up the case in which you need to install wheels
that already exist in the global cache.
The new strategy is as follows:
- Download the wheel into the content-addressed cache.
- Unzip the wheel into the cache, but ignore content-addressing. It
turns out that writing to `cacache` for every file in the zip added a
ton of overhead, and I don't see any actual advantages to doing so.
Instead, we just unzip the contents into a directory at, e.g.,
`~/.cache/puffin/django-4.1.5`.
- (The unzip itself is now parallelized with Rayon.)
- When installing the wheel, we now support unzipping from a directory
instead of a zip archive. This required duplicating and tweaking a few
functions.
- When installing the wheel, we now use reflinks (or copy-on-write
links). These have a few fantastic properties: (1) they're extremely
cheap to create (on macOS, they are allegedly faster than hard links);
(2) they minimize disk space, since we avoid copying files entirely in
the vast majority of cases; and (3) if the user then edits a file
locally, the cache doesn't get polluted. Orogene, Bun, and soon pnpm all
use reflinks.
Puffin is now ~15x faster than `pip` for the common case of installing
cached data into a fresh environment.
Closes https://github.com/astral-sh/puffin/issues/21.
Closes https://github.com/astral-sh/puffin/issues/39.
konsti
Charlie Marsh
danieleades
markmmm
Aarni Koskela