new recipe: dblatex

[jmairboeck]

This is a python script to convert DocBook to LaTeX.
It is another (optional) dependency of LilyPond.

Note: this depends on texlive and can therefore not be built as long as that is disabled.

[jmairboeck]

I have now updated the recipe to use the split texlive package names from #6229. If that could get merged, we could activate and merge this one too probably.

Maybe I should start writing the actual Lilypond recipe in the meantime ...

[jmairboeck]

I just noticed that this doesn't work correctly when packaged. dblatex --version prints the following error message:

/packages/python3-3.7.12-1/.self/lib/python3.7/vendor-packages> dblatex --version
Traceback (most recent call last):
  File "/bin/dblatex", line 11, in <module>
    dblatex.main(base=package_base)
  File "/packages/python3-3.7.12-1/.self/lib/python3.7/vendor-packages/dbtexmf/dblatex/dblatex.py", line 43, in main
    command.main()
  File "/packages/python3-3.7.12-1/.self/lib/python3.7/vendor-packages/dbtexmf/core/dbtex.py", line 688, in main
    version = run.get_version()
  File "/packages/python3-3.7.12-1/.self/lib/python3.7/vendor-packages/dbtexmf/core/dbtex.py", line 204, in get_version
    f = open(os.path.join(self.topdir, "xsl", "version.xsl"), "rt", encoding="latin-1")
FileNotFoundError: [Errno -2147459069] No such file or directory: '/boot/system/lib/python3.7/vendor-packages/packages/dblatex-0.3.12-1/.self/data/dblatex/xsl/version.xsl'

It seems to use a relative path as base path that should be absolute instead.

[jmairboeck]

the above is just an example, when running it from the home directory, it searches in /boot/home/packages/dblatex-0.3.12-1/.self/data/dblatex/xsl/version.xsl.

Only when running it from the root directory, it works correctly.

[jmairboeck]

the above is just an example, when running it from the home directory, it searches in /boot/home/packages/dblatex-0.3.12-1/.self/data/dblatex/xsl/version.xsl.

Only when running it from the root directory, it works correctly.

I have solved the problem by removing --root=/ from the setup.py install call.

[korli]

the above is just an example, when running it from the home directory, it searches in /boot/home/packages/dblatex-0.3.12-1/.self/data/dblatex/xsl/version.xsl.
Only when running it from the root directory, it works correctly.

I have solved the problem by removing --root=/ from the setup.py install call.

The install location should come first in PYTHONPATH, see for instance: https://github.com/haikuports/haikuports/blob/master/dev-python/aiodns/aiodns-2.0.0.recipe#L50

[jmairboeck]

What is the purpose of --root=/ anyway?

The "problem" was the following: the setup.py script of dblatex creates a launcher script that gets installed in $prefix/bin. This uses package_base to find its files. The problematic function here is _strip_root (see here), which removes the root dir if it is a prefix of the package_path, therefore stripping the initial '/' and resulting in an incorrect relative path.

[Begasus]

Needs merging for texlive update first: #6818