"Environement categories" (was Re: [gentoo-dev] fix binary debug support, part elevenity billion 1/2)

[Danny van Dyk]

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Hi,

[Please excuse the improper naming for this subject. I'll take any
suggestions to improve it :-) ]

Donnie Berkholz schrieb:
| Marius Mauch wrote:
|>I meant the option is redundant if it just triggers a feature setting,
|>as it's the same as `FEATURES=debug-build emerge foo`
|
| OK, where's my package.features and packages.cflags files then? I can do
| what I want through Mike's proposal, which is to build a specific
| collection of packages with debugging. I also don't need to duplicate
| the same list of packages in one file with FEATURES=nostrip and in
| another with debugging CFLAGS.

I'd love to have one package.env (or similarly named) file that can set
environmental options on a per-package-base. This is just a proposal,
but i personally would like it this way:

# First define a category of environmental options:
stable=( \
	"ACCEPT_KEYWORDS=\"arch\"" \
	"CFLAGS=\"-pipe -O -march=foo\"" \
)
debug=( \
	"FEATURES=\"debug-build keepwork\"" \
	"CFLAGS=\"-pipe -O0 -ggdb\"" \
)
# then tell portage to use a env-category for certain packages:
app-foo/totallybroken		debug
=app-bar/anotherbrokenpkg	debug
# Also, system packages should get their own category that would
# be used by default on them.
system=( \
	"ACCEPT_KEYWORDS=\"arch\"" \
	"FEATURES=\"buildpkg\"" \
)

This proposed format could even be more easily parsed when split into to
files. One file to define the categories and one to define the
package-to-category bindings. The first file would be pure bash and
could be loaded like this:

mycat=$(
	. ${CATEGORY_FILE}
	cat=${!cat}
	for i in $(seq 0 $(( ${#cat[@]} - 1)) ) ; do
		echo -e "${cat[${i}]}"
	done
)

Comments? Please keep in mind that the code snippets here are just
proof-of-concept code and not meant literally!

Danny
- --
Danny van Dyk <kugelfang@g.o>
Gentoo/AMD64 Project, Gentoo Scientific Project
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