[MacPorts] #55293: set ${prefix} in portindex
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noreply at macports.org
Sat Nov 11 09:12:19 UTC 2017
#55293: set ${prefix} in portindex
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Reporter: RJVB | Owner:
Type: enhancement | Status: new
Priority: Normal | Milestone:
Component: base | Version:
Resolution: | Keywords:
Port: |
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Comment (by RJVB):
One example would be with port families like python, perl or Qt5 which all
share (are served by) a common PortGroup. If that PortGroup or the
Portfiles need to do something that depends on what the user has installed
it is a lot easier (and probably faster) to check for the presence of an
installed file that to query the registry. (`file exists` is a Tcl
primitive and doesn't need catching.)
One application would be port:qt5 vs. my pending port:qt5-kde . These have
partial PortGroup sharing, but the main payload sits in dedicated PG files
which are loaded as a function of what is installed.
It would be trivial to work around `$prefix` not being declared in/by
portindex, but not elegant. Is there a solid reason why `$prefix` and
possibly other useful and often-used variables aren't set when portindex
is run?
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Ticket URL: <https://trac.macports.org/ticket/55293#comment:3>
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