Bugzilla Bug 250718

I'm going to assume this is a problem with my system, but I can't figure out
what to remerge/unmerge to fix the issue.  

g-cpan fails to build any modules, with the error message "No Make or Build
file detected" being the culprit.  However, it will merge an empty module and
unmerge any previous instance.  

Merging dev-perl/* modules from the normal tree works fine, so it doesn't seem
to actually be an issue with the perl eclasses.

Output is as follows:

netresponse-test ~ # g-cpan -i Exception::Base
-CPAN: File::HomeDir loaded ok (v0.69)
CPAN: Storable loaded ok (v2.18)
Going to read /var/tmp/g-cpan/.cpan/Metadata
  Database was generated on Thu, 11 Dec 2008 23:26:56 GMT
 * Ebuild already exists for Exception-Base (perl-gcpan/Exception-Base)
Calculating dependencies... done!
>>> Verifying ebuild Manifests...

>>> Emerging (1 of 1) perl-gcpan/Exception-Base-0.21 to /
 * Exception-Base-0.21.tar.gz RMD160 SHA1 SHA256 size ;-) ...                  
                                                                        [ ok ]
 * checking ebuild checksums ;-) ...                                           
                                                                        [ ok ]
 * checking auxfile checksums ;-) ...                                          
                                                                        [ ok ]
 * checking miscfile checksums ;-) ...                                         
                                                                        [ ok ]
 * checking Exception-Base-0.21.tar.gz ;-) ...                                 
                                                                        [ ok ]
>>> Unpacking source...
>>> Unpacking Exception-Base-0.21.tar.gz to /var/tmp/portage/perl-gcpan/Exception-Base-0.21/work
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/perl-gcpan/Exception-Base-0.21/work ...
 * No Make or Build file detected...
>>> Source compiled.
>>> Test phase [not enabled]: perl-gcpan/Exception-Base-0.21

>>> Install Exception-Base-0.21 into /var/tmp/portage/perl-gcpan/Exception-Base-0.21/image/ category perl-gcpan
 * Cleaning out stray man files
>>> Completed installing Exception-Base-0.21 into /var/tmp/portage/perl-gcpan/Exception-Base-0.21/image/

* checking 0 files for package collisions
>>> Merging perl-gcpan/Exception-Base-0.21 to /
>>> Safely unmerging already-installed instance...
No package files given... Grabbing a set.
>>> Original instance of package unmerged safely.
 * Man pages are not installed for most modules now.
 * Please use perldoc instead.
>>> perl-gcpan/Exception-Base-0.21 merged.

>>> No packages selected for removal by clean
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.
 * GNU info directory index is up-to-date.



It looks like its searching for the Build and/or Make file in the work
directory, instead of the source directory.

Reproducible: Always

Steps to Reproduce:
1. Run g-cpan -i Perl::Module
2. 
3.

Please paste your emerge --info output and your "emerge -pv g-cpan" output. 

dylanv@netresponse-test ~ $ sudo emerge --info
Password:
Portage 2.1.4.5 (default/linux/x86/2008.0, gcc-4.1.2, glibc-2.6.1-r0,
2.6.22-gentoo-r9 i686)
=================================================================
System uname: 2.6.22-gentoo-r9 i686 Intel(R) Xeon(TM) CPU 2.80GHz
Timestamp of tree: Thu, 11 Dec 2008 20:21:02 +0000
app-shells/bash:     3.2_p33
dev-java/java-config: 1.3.7-r1, 2.1.6
dev-lang/python:     2.4.4-r13, 2.5.2-r7
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 1.12.11.1
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.61-r2
sys-devel/automake:  1.7.9-r1, 1.9.6-r2, 1.10.1-r1
sys-devel/binutils:  2.18-r3
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.23-r3
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium4 -fomit-frame-pointer -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/
/etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/
/etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild
/etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=pentium4 -fomit-frame-pointer -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks metadata-transfer parallel-fetch sandbox sfperms strict
unmerge-orphans userfetch"
GENTOO_MIRRORS="http://gentoo.llarian.net/"
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --stats --timeout=180 --exclude=/distfiles
--exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage /usr/local/perl-experimental
/txlogic/portage"
SYNC="rsync://gentoo.llarian.net/gentoo-portage"
USE="acl apache2 berkdb bzip2 cli cracklib crypt dba dri gd gdbm gif gpm iconv
innodb isdnlog jpeg mbox midi mmx mudflap ncurses nls no-htdocs nptl nptlonly
openmp pam pcre perl png pppd python readline reflection session snmp spl sse
sse2 ssl sysfs tiff unicode x86 xml xorg zlib" ALSA_CARDS="ali5451 als4000
atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938
es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx
via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop
empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul
mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions
alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file
authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user
autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires
ext_filter file_cache filter headers include info log_config logio mem_cache
mime mime_magic negotiation rewrite setenvif speling status unique_id userdir
usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev"
KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001
mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="fbdev glint i810 intel mach64
mga neomagic nv r128 radeon savage sis tdfx trident vesa vga via vmware voodoo"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG,
LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS,
PORTAGE_RSYNC_EXTRA_OPTS

dylanv@netresponse-test ~ $ sudo emerge -pv g-cpan

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] app-portage/g-cpan-0.15.0-r1  0 kB

Total: 1 package (1 reinstall), Size of downloads: 0 kB

I've tracked it down to this bug:

http://bugs.gentoo.org/show_bug.cgi?id=176630

${S} is being set to the archive dir, plus a string of random characters, so
the workdir isn't being found.  The patch included in bug 176630 solves the
problem, but I have the latest Gentoo::CPAN module available (does not include
the patch), and it is definitely still broken in some environments.

Same here, looks like removing the S-Var fixes it.
But i don't know what side-effects it might have.. Why does g-cpan even set the
S to these string including a version number? Looks like that again the best
practice here: "Including version numbers in SRC_URI and S"

http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=2&chap=3#doc_chap1

Good find, Dylan. The patch provided in that bug report works for me. I was
able to install a couple modules with g-cpan once again.