Install of CPAN Perl module on RHEL 7 fails (Amazon EC2)

Question

I am trying to install x2goserver on my RHEL 7 server. I ran into dependency issues exactly like the question here, (I am not familiar with Perl or CPAN, I just want a functioning x2goserver) so when I tried installing the CPAN Perl modules as described in the answer this time I ran into the following output:

$ sudo cpan
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.9800)
Enter 'h' for help.

cpan[1]> install File::Which
Reading '/root/.cpan/Metadata'
  Database was generated on Thu, 14 Jul 2016 21:53:35 GMT
Fetching with HTTP::Tiny:
http://mirror.ox.ac.uk/sites/www.cpan.org/authors/01mailrc.txt.gz
Reading '/root/.cpan/sources/authors/01mailrc.txt.gz'
............................................................................DONE
Fetching with HTTP::Tiny:
http://mirror.ox.ac.uk/sites/www.cpan.org/modules/02packages.details.txt.gz
Reading '/root/.cpan/sources/modules/02packages.details.txt.gz'
  Database was generated on Fri, 15 Jul 2016 22:17:02 GMT
  HTTP::Date not available
.............
  New CPAN.pm version (v2.14) available.
  [Currently running version is v1.9800]
  You might want to try
    install CPAN
    reload cpan
  to both upgrade CPAN.pm and run the new version without leaving
  the current session.


...............................................................DONE
Fetching with HTTP::Tiny:
http://mirror.ox.ac.uk/sites/www.cpan.org/modules/03modlist.data.gz
Reading '/root/.cpan/sources/modules/03modlist.data.gz'
DONE
Writing /root/.cpan/Metadata
Running install for module 'File::Which'
Running make for P/PL/PLICEASE/File-Which-1.21.tar.gz
Checksum for /root/.cpan/sources/authors/id/P/PL/PLICEASE/File-Which-1.21.tar.gz ok
Scanning cache /root/.cpan/build for sizes
............................................................................DONE

  CPAN.pm: Building P/PL/PLICEASE/File-Which-1.21.tar.gz

Checking if your kit is complete...
Looks good
Writing Makefile for File::Which
Could not read metadata file. Falling back to other methods to determine prerequisites
cp lib/File/Which.pm blib/lib/File/Which.pm
Manifying blib/man3/File::Which.3pm
  PLICEASE/File-Which-1.21.tar.gz
  /bin/make -- OK
Running make test
PERL_DL_NONLAZY=1 /usr/bin/perl "-MExtUtils::Command::MM" "-e" "test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/00_diag.t ..... 1/1 # 
# 
# 
# HARNESS_ACTIVE=1
# HARNESS_VERSION=3.28
# LANG=en_US.UTF-8
# LC_ADDRESS=tr_TR.UTF-8
# LC_IDENTIFICATION=tr_TR.UTF-8
# LC_MEASUREMENT=tr_TR.UTF-8
# LC_MONETARY=tr_TR.UTF-8
# LC_NAME=tr_TR.UTF-8
# LC_NUMERIC=tr_TR.UTF-8
# LC_PAPER=tr_TR.UTF-8
# LC_TELEPHONE=tr_TR.UTF-8
# LC_TIME=tr_TR.UTF-8
# PERL5LIB=/root/.cpan/build/File-Which-1.21-lieZ00/blib/lib:/root/.cpan/build/File-Which-1.21-lieZ00/blib/arch:
# PERL5OPT=
# PERL5_CPANPLUS_IS_RUNNING=3630
# PERL5_CPAN_IS_RUNNING=3630
# PERL_DL_NONLAZY=1
# SHELL=/bin/bash
# 
# 
# 
# PERL5LIB path
# /root/.cpan/build/File-Which-1.21-lieZ00/blib/lib
# /root/.cpan/build/File-Which-1.21-lieZ00/blib/arch
# 
# 
# 
# perl                5.016003
# ExtUtils::MakeMaker 6.68
# Test::More          1.302040
# 
# 
# 
t/00_diag.t ..... ok   
t/01_compile.t .. ok   
t/02_all.t ...... Can't locate Env.pm in @INC (@INC contains: /root/.cpan/build/File-Which-1.21-lieZ00/blib/lib /root/.cpan/build/File-Which-1.21-lieZ00/blib/arch /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at t/02_all.t line 3.
BEGIN failed--compilation aborted at t/02_all.t line 3.
t/02_all.t ...... Dubious, test returned 2 (wstat 512, 0x200)
No subtests run 
t/03_simple.t ... Can't locate Env.pm in @INC (@INC contains: /root/.cpan/build/File-Which-1.21-lieZ00/blib/lib /root/.cpan/build/File-Which-1.21-lieZ00/blib/arch /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at t/03_simple.t line 6.
BEGIN failed--compilation aborted at t/03_simple.t line 6.
# Looks like your test exited with 2 before it could output anything.
t/03_simple.t ... Dubious, test returned 2 (wstat 512, 0x200)
Failed 10/10 subtests 
t/04_pwhich.t ... ok   

Test Summary Report
-------------------
t/02_all.t    (Wstat: 512 Tests: 0 Failed: 0)
  Non-zero exit status: 2
  Parse errors: No plan found in TAP output
t/03_simple.t (Wstat: 512 Tests: 0 Failed: 0)
  Non-zero exit status: 2
  Parse errors: Bad plan.  You planned 10 tests but ran 0.
Files=5, Tests=5,  0 wallclock secs ( 0.02 usr  0.01 sys +  0.17 cusr  0.01 csys =  0.21 CPU)
Result: FAIL
Failed 2/5 test programs. 0/5 subtests failed.
make: *** [test_dynamic] Error 255
  PLICEASE/File-Which-1.21.tar.gz
  /bin/make test -- NOT OK
//hint// to see the cpan-testers results for installing this module, try:
  reports PLICEASE/File-Which-1.21.tar.gz
Running make install
  make test had returned bad status, won't install without force
Failed during this command:
 PLICEASE/File-Which-1.21.tar.gz              : make_test NO

Answer 1

» Can't locate Env.pm in @INC «

File::Which , and Env : # yum install perl-File-Which perl-Env

Please always use the search, like : yum search file-which

---

EDIT : About the other x2goserver dependencies :

# yum search perl-Config-Simple perl-Capture-Tiny
# yum install perl-Config-Simple perl-Capture-Tiny