Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file?

boleary has asked for the wisdom of the Perl Monks concerning the following question:

I built a patched version of TK to work around a bad pointer issue in the latest CPAN released module.
(I got the fix from one of the pull requests on gitHub)
I store that .tgz file out on my website at https://securedata.cadEnhance.com/build_assets/Tk-Module-fixed/Tk-804.035_999-cboleary.tar.gz
When I am setting up perl on a vm, I run a script to install all the modules I need
the script issues this command:
cpanm https://securedata.cadEnhance.com/build_assets/Tk-Module-fixed/Tk-804.035_999-cboleary.tar.gz

The problem I have is that the script always re-installs this module (and the Tk module takes a good 15-20 minutes to install)
while it skips all the other modules since it knows they are up-to-date
Is there a way to debug why cpanm thinks it needs to re-install the up-to-date module ? hopefully without it going through the whole install process?
Or is there some option I'm missing to to tell it not to re-install?
I can't figure it out from the command line options I think the default option is not to re-install
or will cpanm always re-install if I am pointing to a remote tgz file like this?

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Re: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by choroba (Cardinal) on Oct 01, 2021 at 15:04 UTC
You can also use distroprefs. You can specify patches to apply upon installation and CPAN clients will happily apply them. Just specify `$CPAN::Config->{prefs_dir} = ...; $CPAN::Config->{patches_dir} = ...;` [download] See rurban's distroprefs for inspiration. `map{substr$_->[0],$_->[1]\|\|0,1}[\\|\|{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^ARGV,3]`	[reply] [d/l] [select]
Re^2: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by boleary (Scribe) on Sep 23, 2022 at 11:22 UTC
I think this sounds like a good idea, but the inspiration I got from the link and the documents on cpan were not enough for me to figure out how to use it It sounds like I can download the latest distro, make the changes I want and create a patch file and then have distoprefs apply them? can it also patch the c code and .xs files if needed?	[reply]
Re: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by hippo (Bishop) on Oct 01, 2021 at 13:51 UTC
will cpanm always re-install if I am pointing to a remote tgz file like this? Apparently so. I have just tested by installing https://cpan.metacpan.org/authors/id/A/AB/ABH/Mozilla-CA-20200520.tar.gz twice. It went through the whole shebang both times. I don't immediately see any option for skipping reinstallation with a full URL as argument. 🦛	[reply]
Re: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by Fletch (Bishop) on Oct 01, 2021 at 20:16 UTC
Kludgy (marginally), but maybe further patch your `Tk.pm` and define something like `$Tk::IS_FIXED_BOLEARY = 1` in it. Then you could prefix your call to `cpanm` with something like (adjusting for shell and how snippets need to be called in whatever you're doing): `perl -MTk -E 'exit( $Tk::IS_FIXED_BOLEARY == 1 ? 0 : 99 )' 2>&1 > /dev +/null if [[ $? -eq 0 ]] ; then echo "Locally patched Tk already present, skipping" else echo "Locally patched Tk NOT present, installing with cpanm" cpanm https://BLAHBLAHBLAH/YACKETYSMACKETY fi` [download] Edit: Tweaked exit value check and tossed output. Derp. The cake is a lie. The cake is a lie. The cake is a lie.	[reply] [d/l] [select]
Re^2: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by boleary (Scribe) on Sep 23, 2022 at 11:13 UTC
I hadn't checked back on the history of this post in quite some time.. I like this workaround, and I was actually doing something similar with my installation script.	[reply]
Re^2: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by boleary (Scribe) on Oct 03, 2021 at 11:51 UTC
Not a bad idea...	[reply]
Re: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by Anonymous Monk on Oct 01, 2021 at 20:05 UTC
Things of interest https://metacpan.org/dist/App-cpanminus/view/lib/App/cpanminus/fatscript.pm#-save-dists https://metacpan.org/dist/App-cpanminus/view/lib/App/cpanminus/fatscript.pm#-mirror-index https://metacpan.org/dist/App-cpanminus/view/lib/App/cpanminus/fatscript.pm#-skip-satisfied i think without a mirror index there is no version checking	[reply]
Re^2: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by boleary (Scribe) on Oct 03, 2021 at 11:52 UTC
I will take a look at this.. skip-satisfied sounds like its worth a shot	[reply]
Re^2: Can I get cpanm to skip re-installation of a module when pointing directly to a remote .tgz file? by boleary (Scribe) on Oct 03, 2021 at 13:00 UTC
the skip-satisfied option looks hopeful ;)	[reply]


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