cpan[2]> install YAML::XS
Running install for module 'YAML::XS'
'YAML' not installed, falling back to Data::Dumper and Storable to read prefs '/usr/share/cpan/prefs'
Running make for I/IN/INGY/YAML-LibYAML-0.33.tar.gz
Fetching with LWP:
  ftp://ftp.osuosl.org/pub/CPAN/authors/id/I/IN/INGY/YAML-LibYAML-0.33.tar.gz
Fetching with LWP:
  ftp://ftp.osuosl.org/pub/CPAN/authors/id/I/IN/INGY/CHECKSUMS
Checksum for /usr/share/cpan/sources/authors/id/I/IN/INGY/YAML-LibYAML-0.33.tar.gz ok
YAML-LibYAML-0.33/
YAML-LibYAML-0.33/Changes
YAML-LibYAML-0.33/inc/
YAML-LibYAML-0.33/lib/
YAML-LibYAML-0.33/LibYAML/
YAML-LibYAML-0.33/Makefile.PL
YAML-LibYAML-0.33/MANIFEST
YAML-LibYAML-0.33/META.yml
YAML-LibYAML-0.33/README
YAML-LibYAML-0.33/t/
YAML-LibYAML-0.33/t/alias.t
YAML-LibYAML-0.33/t/api.t
YAML-LibYAML-0.33/t/blessed.t
YAML-LibYAML-0.33/t/boolean.t
YAML-LibYAML-0.33/t/bug-pvf.t
YAML-LibYAML-0.33/t/bug-stack.t
YAML-LibYAML-0.33/t/changes.t
YAML-LibYAML-0.33/t/code.t
YAML-LibYAML-0.33/t/data/
YAML-LibYAML-0.33/t/dump.t
YAML-LibYAML-0.33/t/empty.t
YAML-LibYAML-0.33/t/error.t
YAML-LibYAML-0.33/t/file.t
YAML-LibYAML-0.33/t/glob.t
YAML-LibYAML-0.33/t/leak.t
YAML-LibYAML-0.33/t/load.t
YAML-LibYAML-0.33/t/null.t
YAML-LibYAML-0.33/t/numbers.t
YAML-LibYAML-0.33/t/pl_sv_undef.t
YAML-LibYAML-0.33/t/private.t
YAML-LibYAML-0.33/t/quote.t
YAML-LibYAML-0.33/t/ref-scalar.t
YAML-LibYAML-0.33/t/regexp.t
YAML-LibYAML-0.33/t/string_nulls.t
YAML-LibYAML-0.33/t/tags.t
YAML-LibYAML-0.33/t/TestYAML.pm
YAML-LibYAML-0.33/t/TestYAMLTests.pm
YAML-LibYAML-0.33/t/utf8.t
YAML-LibYAML-0.33/t/yaml_tests.yaml
YAML-LibYAML-0.33/t/data/basic.t
YAML-LibYAML-0.33/LibYAML/api.c
YAML-LibYAML-0.33/LibYAML/config.h
YAML-LibYAML-0.33/LibYAML/dumper.c
YAML-LibYAML-0.33/LibYAML/emitter.c
YAML-LibYAML-0.33/LibYAML/lib/
YAML-LibYAML-0.33/LibYAML/LibYAML.xs
YAML-LibYAML-0.33/LibYAML/loader.c
YAML-LibYAML-0.33/LibYAML/Makefile
YAML-LibYAML-0.33/LibYAML/Makefile.PL
YAML-LibYAML-0.33/LibYAML/parser.c
YAML-LibYAML-0.33/LibYAML/perl_libyaml.c
YAML-LibYAML-0.33/LibYAML/perl_libyaml.h
YAML-LibYAML-0.33/LibYAML/ppport.h
YAML-LibYAML-0.33/LibYAML/ppport_sort.h
YAML-LibYAML-0.33/LibYAML/reader.c
YAML-LibYAML-0.33/LibYAML/scanner.c
YAML-LibYAML-0.33/LibYAML/test.pl
YAML-LibYAML-0.33/LibYAML/writer.c
YAML-LibYAML-0.33/LibYAML/yaml.h
YAML-LibYAML-0.33/LibYAML/yaml_private.h
YAML-LibYAML-0.33/LibYAML/lib/YAML/
YAML-LibYAML-0.33/LibYAML/lib/YAML/XS/
YAML-LibYAML-0.33/LibYAML/lib/YAML/XS/LibYAML.pm
YAML-LibYAML-0.33/lib/YAML/
YAML-LibYAML-0.33/lib/YAML/LibYAML.pm
YAML-LibYAML-0.33/lib/YAML/XS.pm
YAML-LibYAML-0.33/inc/Module/
YAML-LibYAML-0.33/inc/Spiffy.pm
YAML-LibYAML-0.33/inc/Test/
YAML-LibYAML-0.33/inc/Test/Base/
YAML-LibYAML-0.33/inc/Test/Base.pm
YAML-LibYAML-0.33/inc/Test/Builder/
YAML-LibYAML-0.33/inc/Test/Builder.pm
YAML-LibYAML-0.33/inc/Test/More.pm
YAML-LibYAML-0.33/inc/Test/Builder/Module.pm
YAML-LibYAML-0.33/inc/Test/Base/Filter.pm
YAML-LibYAML-0.33/inc/Module/Install/
YAML-LibYAML-0.33/inc/Module/Install.pm
YAML-LibYAML-0.33/inc/Module/Install/Base.pm
YAML-LibYAML-0.33/inc/Module/Install/Can.pm
YAML-LibYAML-0.33/inc/Module/Install/Fetch.pm
YAML-LibYAML-0.33/inc/Module/Install/Include.pm
YAML-LibYAML-0.33/inc/Module/Install/Makefile.pm
YAML-LibYAML-0.33/inc/Module/Install/Metadata.pm
YAML-LibYAML-0.33/inc/Module/Install/TestBase.pm
YAML-LibYAML-0.33/inc/Module/Install/Win32.pm
YAML-LibYAML-0.33/inc/Module/Install/WriteAll.pm
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.
Use of uninitialized value $_[0] in join or string at /usr/share/perl/5.10/File/Spec/Unix.pm line 41.
Use of uninitialized value $path in pattern match (m//) at /usr/share/perl/5.10/File/Spec/Unix.pm line 121.

  CPAN.pm: Going to build I/IN/INGY/YAML-LibYAML-0.33.tar.gz

Warning: No success on command[/usr/bin/perl Makefile.PL INSTALLDIRS=site]
Warning (usually harmless): 'YAML' not installed, will not store persistent state
  INGY/YAML-LibYAML-0.33.tar.gz
  /usr/bin/perl Makefile.PL INSTALLDIRS=site -- NOT OK
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install
Could not read '/usr/share/cpan/build/YAML-LibYAML-0.33-3OEDN6/META.yml'. Falling back to other methods to determine prerequisites
Failed during this command:
 INGY/YAML-LibYAML-0.33.tar.gz                : writemakefile NO '/usr/bin/perl Makefile.PL INSTALLDIRS=site' returned status -1