Re^3: What is cpan (the installer) doing prepending all these directories to the PERL5LIB path?

That's right, ysth. I do understand how env works for the currently-running process, its child processes, its parent process, and so on, ikegami.

Unrelated to the reported behavior is a spurious error message I'm seeing:

prerequisite moduleFile::Basename not known

This message also started appearing rather recently and doesn't seem to be connected to any actual failure in cpan. I thought I'd mention it here since it's a "while we're discussing cpan" kind of thing.

— Soren

Nov 14, 2025 at 19:44 UTC

A just machine to make big decisions
Programmed by fellows (and gals) with compassion and vision
We'll be clean when their work is done
We'll be eternally free yes, and eternally young
Donald Fagen —> I.G.Y.
(Slightly modified for inclusiveness)

Comment on Re^3: What is cpan (the installer) doing prepending all these directories to the PERL5LIB path?

Replies are listed 'Best First'.
Re^4: What is cpan (the installer) doing prepending all these directories to the PERL5LIB path? by ikegami (Patriarch) on Nov 14, 2025 at 22:42 UTC
So what do you claim is sticking around?	[reply]
Re^5: What is cpan (the installer) doing prepending all these directories to the PERL5LIB path? by Intrepid (Curate) on Nov 18, 2025 at 23:12 UTC
It should be clearer if I provide some context. The lines in bold below are directly or possibly relevant to the reported behavior. HTH. $ perl -MCPAN -e shell cpan1> install XML::RSS CPAN: Term::ANSIColor loaded ok (v5.01) CPAN: HTTP::Tiny loaded ok (v0.090) CPAN: Net::SSLeay loaded ok (v1.94) CPAN: IO::Socket::SSL loaded ok (v2.095) Fetching with HTTP::Tiny: https://cpan.org/authors/01mailrc.txt.gz CPAN: CPAN::SQLite loaded ok (v0.220) Fetching with HTTP::Tiny: https://cpan.org/modules/02packages.details.txt.gz Fetching with HTTP::Tiny: https://cpan.org/modules/03modlist.data.gz CPAN: YAML::XS loaded ok (vv0.902.0) Reading 109 yaml files from /cygdrive/C/Users/somia/cygwin-perl-cpan/build/ ............................................................................DONE Restored the state of 19 (in 1.4501 secs) Database was generated on Sun, 16 Nov 2025 19:26:16 GMT Updating database file ... Done! Running install for module 'XML::RSS' CPAN: CPAN::Kwalify loaded ok (v5.50) Prepending blib/arch and blib/lib of 19 build dirs to PERL5LIB, reaching size 2952; for 'get' Fetching with HTTP::Tiny: https://cpan.org/authors/id/S/SH/SHLOMIF/XML-RSS-1.65.tar.gz CPAN: Digest::SHA loaded ok (v6.04) CPAN: Compress::Zlib loaded ok (v2.213) Checksum for C:/Users/somia/AppData/strawberry-perl-sourcecache/authors/id/S/SH/SHLOMIF/XML-RSS-1.65.tar.gz ok CPAN: Archive::Tar loaded ok (v3.04) XML-RSS-1.65 XML-RSS-1.65/TODO XML-RSS-1.65/README XML-RSS-1.65/Changes ... Result: PASS (C:/ix/cygwin/bin/make test exited with 0) CPAN::Reporter: Test result is 'pass', All tests successful. CPAN::Reporter: preparing a CPAN Testers report for XML-RSS-1.65 Do you want to send the report? (yes/no) yes CPAN::Reporter: sending test report with 'pass' via Metabase SHLOMIF/XML-RSS-1.65.tar.gz C:/ix/cygwin/bin/make test -- OK Running make install for SHLOMIF/XML-RSS-1.65.tar.gz Prepending blib/arch and blib/lib of 20 build dirs to PERL5LIB, reaching size 3095; for 'install' ... — Soren Nov 18, 2025 at 23:07 UTC	[reply]