Jesse Keating wrote:
Please alert folks you're doing this. fedora-maintainers@xxxxxxxxxx is the
right place (you should be subscribed!!).
[...]
That's just the list in core, I suspect many more broken in Extras.
I've fixed tcllib in Extras. Even though it doesn't have a dependency
on libtcl8.4.so, it does have a directory dependency on the
/usr/lib/tcl8.4 directory.
This leads me to a related issue:
Tcl searches for packages in 3 directories:
* /usr/share/tcl8.5
* /usr/share
* /usr/lib
The search algorithm involves going into each subdirectory of these
three directories, looking for a file named 'pkgIndex.tcl', and then
reading it. Since there are quite a few subdirectories in /usr/share
and /usr/lib that aren't tcl-related, this results in a lot of wasted
time and effort.
To fix, the default value for 'auto_path' in Tcl needs to be reduced to
2 directories: /usr/lib{64}/tcl8.x and /usr/share/tcl8.x. My informal
tests have shown that this can reduce the initial load time for Tcl
scripts from 3.7s to 0.2s.
Tcl extension packages in Fedora would also have to be modified to
install into these version-specific tcl directories, instead of the
current convention of /usr/lib|/usr/share. A 'tcl-sitearch' macro would
also be needed in Tcl package spec files to detect the correct install
directory. This would bring Tcl more in line with the directory
structure used by other scripting languages (perl, python) in Fedora,
and give Tcl applications a boost in startup times.
I'll file this request in Bugzilla, but was hoping to get feedback from
the Fedora devs, especially those who maintain Tcl extensions, before
any changes were made.
--Wart
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