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Subject: [Bug 209551] Python bits ignore DEFAULT_VERSIONS
Date: Sun, 19 Jun 2016 07:50:51 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209551
--- Comment #5 from Kubilay Kocak <koobs@FreeBSD.org> ---
@Mikhail, can you please provide a few example cases that show:
- The port that is affected
- The intended/expected result
- The actual result
- The result with any workarounds claimed to fix the issue (if there are an=
y)
Currently, and as far as I know/believe, the existing logic is intended as
there are cases where the user-specified DEFAULT_VERSION of python desired,=
may
*not* be appropriate/correct for the port in question, based on the version=
s of
Python that port is declared to support (whether those declared are correct=
or
not). This is further complicated in dependency cases where some ports depe=
nd
on only one or more Python versions.
A shorter way of saying the above is that the user literally cannot know, be
expected to know, nor state the exact and only version of Python they want =
to
be used in any particular case.
Obvious examples are:=20
- User specifies default version 3.x, port only supports 2.x
- User specifies default version 2.x, port only supports 3.x
- User specifies default version x.y, port explicitly does not work with x.y
(say, for example, older 3.x versions)
Having said that, there *are* ports in the tree right now that incorrectly,
incompletely or inaccurately declare those versions. These all need to be
fixed, with the documentation (at least in Uses/python) improved to make it
clearer how to do it, and do it correctly.
Examples are:
Ports that specify USES=3Dpython:2 (or 3). This declaration means *only* th=
at the
port depends on the python2 or python3 *symlink* (and thus port). These sho=
uld
instead be USES=3Dpython:X.Y[+] or [-]X.Y, with an additional *_DEPENDS on =
the
respective lang/python{2,3} symlink port.
Ports that specify X.Y+ arbitrarily, as almost all Python packages support =
only
up to the latest Python X.Y, and often break with future/newer ones until t=
hey
are tested/verified.
Additionally, our USES syntax is unable to specify SOME version specificati=
ons
that are perfectly normal (and common) for Python packages. There is an open
task documented here: https://wiki.freebsd.org/Python#Goals
--=20
You are receiving this mail because:
You are the assignee for the bug.=