[gentoo-user] advice on transitioning from package.use file to package.use directory

[Alexander Kapshuk]

Having read the email exchange on the possibility of using
'package.use' as a directory, I thought I would give that a try.

Here is what I have attempted so far.

cd /etc/portage
mv package.use package.use.COPY
mkdir package.use
cd package.use
awk -F'[/\t ]+' '{printf("echo \047%s\047 >> ", $0); sub("-[0-9]+.*",
"", $2); print $2}' ../package.use.COPY

NOTE; the awk output just generates the command lines for the shell to
run. If the output is acceptable, it should be piped through to the
shell.

Here is the contents of the original 'package.use' file:

cat package.use
=dev-lang/python-2.7.9-r1 sqlite
>=dev-ruby/json-1.8.2-r1 ruby_targets_ruby21
>=dev-ruby/racc-1.4.11 ruby_targets_ruby21
>=dev-ruby/rake-0.9.6-r1 ruby_targets_ruby21
>=dev-ruby/rdoc-4.0.1-r2 ruby_targets_ruby21
>=dev-ruby/rubygems-2.2.5-r1 ruby_targets_ruby21
>=media-libs/harfbuzz-0.9.38 icu
>=media-video/ffmpeg-2.6.3 theora
>=sys-libs/zlib-1.2.8-r1 minizip
>=virtual/rubygems-10 ruby_targets_ruby21
gnome-base/gvfs -http gphoto2 mtp
media-video/vlc a52 aac bidi cdda cdio dts dvd flac freetype gnutls
httpd libass live lua mad matroska mpeg ogg oggvorbis qt4 stream svga
theora vcd vlm wxwindows xv
net-print/hplip scanner qt4
sys-apps/busybox -pam
sys-devel/gcc objc
sys-process/cronie anacron
x11-base/xorg-server udev
xfce-extra/xfce4-power-manager -udisks
xfce-extra/xfce4-sensors-plugin hddtemp lm_sensors

NOTE: There are two entries for 'rubygems' there.

Here is the awk script output:

echo '=dev-lang/python-2.7.9-r1 sqlite' >> python
echo '>=dev-ruby/json-1.8.2-r1 ruby_targets_ruby21' >> json
echo '>=dev-ruby/racc-1.4.11 ruby_targets_ruby21' >> racc
echo '>=dev-ruby/rake-0.9.6-r1 ruby_targets_ruby21' >> rake
echo '>=dev-ruby/rdoc-4.0.1-r2 ruby_targets_ruby21' >> rdoc
echo '>=dev-ruby/rubygems-2.2.5-r1 ruby_targets_ruby21' >> rubygems
echo '>=media-libs/harfbuzz-0.9.38 icu' >> harfbuzz
echo '>=media-video/ffmpeg-2.6.3 theora' >> ffmpeg
echo '>=sys-libs/zlib-1.2.8-r1 minizip' >> zlib
echo '>=virtual/rubygems-10 ruby_targets_ruby21' >> rubygems
echo 'gnome-base/gvfs -http gphoto2 mtp' >> gvfs
echo 'media-video/vlc a52 aac bidi cdda cdio dts dvd flac freetype
gnutls httpd libass live lua mad matroska mpeg ogg oggvorbis qt4
stream svga theora vcd vlm wxwindows xv' >> vlc
echo 'net-print/hplip scanner qt4' >> hplip
echo 'sys-apps/busybox -pam' >> busybox
echo 'sys-devel/gcc objc' >> gcc
echo 'sys-process/cronie anacron' >> cronie
echo 'x11-base/xorg-server udev' >> xorg-server
echo 'xfce-extra/xfce4-power-manager -udisks' >> xfce4-power-manager
echo 'xfce-extra/xfce4-sensors-plugin hddtemp lm_sensors' >>
xfce4-sensors-plugin

The two 'rubygems' entries I had in the original 'package.use' file
went into a single 'rubygems' file:

cat rubygems
>=dev-ruby/rubygems-2.2.5-r1 ruby_targets_ruby21
>=virtual/rubygems-10 ruby_targets_ruby21

Is this format acceptable? Or should I have used two separate files,
one for 'dev-lang/rubygems', and another for 'virtual/rubygems'?

I have run 'emerge -auUND @world' since the transition, which voiced
no complaints so far.

The list's input would be appreciated.