gistfile1.txt

commit 427099d781914dbcb5bf4d85db8bcac9bdf46409
Author: Tatsuhiko Miyagawa <miyagawa@bulknews.net>
Date:   Sun Mar 21 06:30:31 2010 -0700

    don't bother fixing CPAN if running from cpanminus

diff --git a/Makefile.PL b/Makefile.PL
index 570e362..6c3466f 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -175,24 +175,26 @@ requires 'ExtUtils::Install' => '1.43'; # ditto
 requires 'ExtUtils::CBuilder'; # this and ParseXS are needed for MB C_support
 requires 'ExtUtils::ParseXS';
 requires 'Module::Build' => '0.28'; # lib -> lib/perl5 change
-my $required_CPAN = '1.82';
-requires 'CPAN' => $required_CPAN; # sudo support + CPAN::HandleConfig
-
-# No, really. See
-# https://rt.cpan.org/Public/Bug/Display.html?id=23735
-# for why CPAN now sets the CPANPLUS env var.
-# trouble is this means we can't auto_install(_now) CPAN itself
-# without this beautiful hack
-
-my $no_cpanplus_env = !exists $ENV{PERL5_CPANPLUS_IS_RUNNING};
-my $no_cpan_env = !exists $ENV{PERL5_CPAN_IS_RUNNING};
-require CPAN;
-delete $ENV{PERL5_CPANPLUS_IS_RUNNING} if $no_cpanplus_env;
-delete $ENV{PERL5_CPAN_IS_RUNNING} if $no_cpan_env;
-
-# and make sure that the user doesn't have any existing CPAN config that'll
-# cause us problems for the next few steps.
-{
+
+# don't bother fixing CPAN.pm if bootstrapped from cpanminus
+unless ($ENV{PERL5_CPANM_IS_RUNNING}) {
+    my $required_CPAN = '1.82';
+    requires 'CPAN' => $required_CPAN; # sudo support + CPAN::HandleConfig
+
+    # No, really. See
+    # https://rt.cpan.org/Public/Bug/Display.html?id=23735
+    # for why CPAN now sets the CPANPLUS env var.
+    # trouble is this means we can't auto_install(_now) CPAN itself
+    # without this beautiful hack
+
+    my $no_cpanplus_env = !exists $ENV{PERL5_CPANPLUS_IS_RUNNING};
+    my $no_cpan_env = !exists $ENV{PERL5_CPAN_IS_RUNNING};
+    require CPAN;
+    delete $ENV{PERL5_CPANPLUS_IS_RUNNING} if $no_cpanplus_env;
+    delete $ENV{PERL5_CPAN_IS_RUNNING} if $no_cpan_env;
+
+    # and make sure that the user doesn't have any existing CPAN config that'll
+    # cause us problems for the next few steps.
     local $@;
     eval { require CPAN::HandleConfig; };
     # Need newish CPAN.pm for this, ergo skip it if that version of CPAN isn't