app-misc/foo/foo-0.ebuild app-misc/bar/bar-0.ebuild

app-miscfoofoo-0.ebuild app-miscbarbar-0.ebuild.txt

$ cat app-misc/foo/foo-0.ebuild
# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=4

DESCRIPTION=""
HOMEPAGE=""
SRC_URI=""

LICENSE=""
SLOT="0"
KEYWORDS="amd64"
IUSE=""

DEPEND=""
RDEPEND="${DEPEND}"

S=${WORKDIR}
src_install() {
	echo 'MYFOO=abcd' > 50foo
	doenvd 50foo
}

$ cat app-misc/bar/bar-0.ebuild
# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=4

DESCRIPTION=""
HOMEPAGE=""
SRC_URI=""

LICENSE=""
SLOT="0"
KEYWORDS="amd64"
IUSE=""

DEPEND="app-misc/foo"
RDEPEND="${DEPEND}"

S=${WORKDIR}

src_unpack() {
	echo "MYFOO=${MYFOO}"
}


floppym@naomi foo % sudo emerge -av1 -j1 app-misc/bar

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

Calculating dependencies... done!
[ebuild  N     ] app-misc/foo-0::local  0 kB
[ebuild  N     ] app-misc/bar-0::local  0 kB

Total: 2 packages (2 new), Size of downloads: 0 kB

Would you like to merge these packages? [Yes/No]

>>> Verifying ebuild manifests

>>> Starting parallel fetch

>>> Emerging (1 of 2) app-misc/foo-0 from local
>>> Unpacking source...
>>> Source unpacked in /tmp/portage/app-misc/foo-0/work
>>> Preparing source in /tmp/portage/app-misc/foo-0/work ...
>>> Source prepared.
>>> Configuring source in /tmp/portage/app-misc/foo-0/work ...
>>> Source configured.
>>> Compiling source in /tmp/portage/app-misc/foo-0/work ...
>>> Source compiled.
>>> Test phase [not enabled]: app-misc/foo-0

>>> Install foo-0 into /tmp/portage/app-misc/foo-0/image/ category app-misc
>>> Completed installing foo-0 into /tmp/portage/app-misc/foo-0/image/

./
./etc/
./etc/env.d/
./etc/env.d/50foo
>>> Done.

>>> Installing (1 of 2) app-misc/foo-0
 * checking 1 files for package collisions
>>> Merging app-misc/foo-0 to /
--- /etc/
--- /etc/env.d/
>>> /etc/env.d/50foo
>>> app-misc/foo-0 merged.
>>> Regenerating /etc/ld.so.cache...

>>> Emerging (2 of 2) app-misc/bar-0 from local
>>> Unpacking source...
MYFOO=abcd
>>> Source unpacked in /tmp/portage/app-misc/bar-0/work
>>> Preparing source in /tmp/portage/app-misc/bar-0/work ...
>>> Source prepared.
>>> Configuring source in /tmp/portage/app-misc/bar-0/work ...
>>> Source configured.
>>> Compiling source in /tmp/portage/app-misc/bar-0/work ...
>>> Source compiled.
>>> Test phase [not enabled]: app-misc/bar-0

>>> Install bar-0 into /tmp/portage/app-misc/bar-0/image/ category app-misc
>>> Completed installing bar-0 into /tmp/portage/app-misc/bar-0/image/

./
>>> Done.

>>> Installing (2 of 2) app-misc/bar-0
 * checking 0 files for package collisions
>>> Merging app-misc/bar-0 to /
>>> app-misc/bar-0 merged.
>>> Regenerating /etc/ld.so.cache...
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.

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