Re: [gentoo-dev] ruby gems vs. ebuilds

[Boris Fersing]

2006/10/5, Roy Wright <royw@×××××.com>:
> Howdy,
>
> Can someone point me to any documentation on why ebuilds are
> being created for ruby gems?
>
> Gem is the a nice, easy to use, standard package manager for ruby.
>
> The problem that I see is if you install the same package via both
> gem and portage all sorts of bad things happen.  For the curious,
> use gem to install rake, then portage to install rake, then try to
> use rake...  Hint, emerge --unmerge is your friend.
>
> The real problem is when you now install a package that has
> ruby dependencies (example kazehakase-0.4.1).  Real easy to
> to have portage trash your previous gem install.
>
> Wouldn't make more sense to have the ebuilds front-end gem vs.
> doing a config & make & make instlal?  Then if you had installed
> via gem, then portage, the gem would just be re-installed, not
> installed differently.

Hi,

AFAIK, the ruby related ebuilds use gem. For example rails has in his ebuild :

"inherit ruby gems"

and if you look in the gems eclass :

<code>
gems_src_install() {
    gems_location

    if [ -z "${MY_P}" ]; then
        GEM_SRC=${DISTDIR}/${P}
    else
        GEM_SRC=${DISTDIR}/${MY_P}
    fi

    if use doc; then
        myconf="--rdoc"
    else
        myconf="--no-rdoc"
    fi

    dodir ${GEMSDIR}
    gem install ${GEM_SRC} -v ${PV} ${myconf} -l -i ${D}/${GEMSDIR} ||
die "gem install failed"

    if [ -d ${D}/${GEMSDIR}/bin ] ; then
        exeinto /usr/bin
        for exe in ${D}/${GEMSDIR}/bin/* ; do
            doexe ${exe}
        done
    fi
}
</code>

And it's the same for rake !

The problem might be (that's a supposition only) that gem installs the
files in the image which will be merged to the system by portage and
doesn't install the files directly in the "real" system.

or maybe did I miss something ?

Regards,

Boris.
>
> TIA,
> Roy
>
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>
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