mod_gnutls: Portfile error

[mf2k (Frank Schima)]

$ port info mod_gnutls
Error: Unable to open port: can't read "PythonBranch": no such variable

[Schamschula (Marius Schamschula)]

I cannot reproduce this error:

$ port info mod_gnutls
mod_gnutls @0.10.0 (www, security, crypto)
Variants:             apache22, memcache, python37, [+]python38, universal

Description:          mod_gnutls uses the GnuTLS library to provide SSL 3.0, TLS 1.0 and TLS 1.1 encryption for Apache HTTPD. It is similar to mod_ssl in purpose, but does not use OpenSSL.
Homepage:             https://mod.gnutls.org

Build Dependencies:   pkgconfig, autoconf, automake, libtool
Library Dependencies: apache2, gnutls, python38
Platforms:            darwin
License:              Apache-2
Maintainers:          Email: mps@macports.org, GitHub: Schamschula
                      Policy: openmaintainer

[mf2k (Frank Schima)]

Try this:

port info mod_gnutls +python37

[jmroot (Joshua Root)]

Yeah, the variable is used before the variant bodies are evaluated, so it's undefined if it wasn't set in the if block.

Another point this raises: adding the dependency appears to be the only place the PythonBranch variable is used. How are you telling the software which python version to use?

[Schamschula (Marius Schamschula)]

Indeed!

Unfortunately, after I specify the python interpreter, configure gives me the mistaken error:

checking whether /opt/local/bin/python3.8 version is >= 3... no

Still looking into that.

[Schamschula (Marius Schamschula)]

In 789567135dca85be88ab1b969668bcd1caedf553/macports-ports (master):

mod_gnutls 0.10.0: fix error in calling python

Closes: #60100