Can't locate Text/Soundex.pm in #INC - perl

Question

I was installing repeatsmasker and it apparently seems to work because it shows "Congratulations! RepeatMasker is now ready to use."
But when I run it it reports "Can't locate Text/Soundex.pm...". so I installed the module by "sudo cpan Text::Soundex", and by the end it tells me "Text::Soundex is up to date (3.05)." It seems the module is already installed, but RepeatMasker still has the same problem, as I'll show you in this code:
fragua#picci:~/RM/RepeatMasker$ sudo cpan Text::Soundex
Loading internal null logger. Install Log::Log4perl for logging messages
Reading '/home/fragua/.cpan/Metadata'
Database was generated on Fri, 19 Apr 2019 22:17:03 GMT
Text::Soundex is up to date (3.05).
fragua#picci:~/RM/RepeatMasker$ ./RepeatMasker -s -lib /home/fragua/RepeatScout-1.0.5/ObiINK5k_repeats_filtered1.fasta /home/fragua/Documenti/Workdirectory/ObiINC5k.fa
Can't locate Text/Soundex.pm in #INC (you may need to install the Text::Soundex module) (#INC contains: /home/fragua/RM/RepeatMasker /home/fragua/perl5/lib/perl5 /home/fragua/anaconda/lib/site_perl/5.26.2/x86_64-linux-thread-multi /home/fragua/anaconda/lib/site_perl/5.26.2 /home/fragua/anaconda/lib/5.26.2/x86_64-linux-thread-multi /home/fragua/anaconda/lib/5.26.2 .) at /home/fragua/RM/RepeatMasker/Taxonomy.pm line 80.
BEGIN failed--compilation aborted at /home/fragua/RM/RepeatMasker/Taxonomy.pm line 80.
Compilation failed in require at ./RepeatMasker line 310.
BEGIN failed--compilation aborted at ./RepeatMasker line 310.
I installed RepeatMasker in another computer without problems, but I don't know why now I encontered this problem

Answer 1

You have two builds of Perl installed:
/usr/bin/perl
/home/fragua/anaconda/bin/perl.
/home/fragua/anaconda/bin/perl is first in your PATH. This means that programs with the following shebang (#!) line will use /home/fragua/anaconda/bin/perl:
#!/usr/bin/env perl
RepeatMasker appears to be such a program.
All of this is fine.
The Problem
/home/fragua/anaconda/bin contains the scripts installed by /home/fragua/anaconda/bin/perl. As part of the installation process of these scripts, the shebang line of these scripts should have been rewritten to specify /home/fragua/anaconda/bin/perl.
However, the shebang line of /home/fragua/anaconda/bin/cpan references /usr/bin/perl. This means that using /home/fragua/anaconda/bin/cpan would install modules for /usr/bin/perl, not /home/fragua/anaconda/bin/perl.
The Workaround
You could avoid relying on the shebang line and explicitly specify the correct perl.
/home/fragua/anaconda/bin/perl /home/fragua/anaconda/bin/cpan Text::Soundex
Or, given your $PATH,
perl /home/fragua/anaconda/bin/cpan Text::Soundex
The Fix
To fix this problem in an ongoing manner requires changing the shebang lines of the scripts to be what they should be. In every file in /home/fragua/anaconda/bin (and in particular for cpan), replace
#!/usr/bin/perl
with
#!/home/fragua/anaconda/bin/perl
You could do this use the following (which does a backup of the files it changes):
perl -0777ne'print "$ARGV\n" if m{^#!\s*/usr/bin/perl\b}' /home/fragua/anaconda/bin/* \
| xargs perl -i~ -0777pe's{^#!\s*/usr/bin/perl\b}{#!/home/fragua/anaconda/bin/perl}'