portpatch.tcl: support xz-compressed patchfiles

[ryandesign (Ryan Carsten Schmidt)]

portpatch.tcl already automatically handles patchfiles whose names end with .Z, .gz and .bz2, passing them through the appropriate decompressor first. Add support for xz-compressed files.

The complication is that a dependency on port:xz would have to be added since macOS doesn't include it.

[larryv (Lawrence Velázquez)]

Cc Me!

[kurthindenburg (Kurt Hindenburg)]

My attempt at adding depends_patch ​https://github.com/macports/macports-base/pull/66

If committed, I'll make another pull to use it for patches.

[Kurt Hindenburg <kurt.hindenburg@…>]

In a74c159d4321cfda67b9756cc641a02884e086c4/macports-base:

Add depends_patch to handle the patch dependencies of ports

This can be used to handle xz patches in the below trac ticket (which
requires another patch to base).

See #52445

[kurthindenburg (Kurt Hindenburg)]

​https://github.com/macports/macports-base/pull/67

Note that this doesn't allow use of tar.xz patch files such as w3m_0.5.3-36.debian.tar.xz - that would need another patch

[ryandesign (Ryan Carsten Schmidt)]

Replying to kurthindenburg:

Note that this doesn't allow use of tar.xz patch files such as w3m_0.5.3-36.debian.tar.xz - that would need another patch

I would consider that a completely separate feature, to be dealt with in another ticket, following perhaps first a mailing list discussion in which the feature is proposed and specified. MacPorts doesn't support .tar.gz or .tar.bz2 "patch files" either. A tar file could (and the example w3m_0.5.3-36.debian.tar.xz file does) contain multiple files, not all of which are patches; it's not immediately clear how or if MacPorts should handle that.

[Kurt Hindenburg <kurt.hindenburg@…>]

In 5a142fd203557a6d2f03d580affed9d4aad3ffd4/macports-base:

Add the ability to handle xz patch files

closes #52445