[gentoo-amd64] Re: simulating apt-get on gentoo

[Jonathan Callen]

On 04/18/2016 08:49 AM, Mark Knecht wrote:
> On Mon, Apr 18, 2016 at 5:40 AM, Daiajo Tibdixious
> <daiajo@×××××.com> wrote:
>
>> A package I wish to download has these instructions:
>>
>> wget -O -
>> http://content.runescape.com/a=946/downloads/ubuntu/runescape.gpg.key
>>
>>
| apt-key add -
>> mkdir -p /etc/apt/sources.list.d echo "deb
>> http://content.runescape.com/a=946/downloads/ubuntu trusty
>> non-free" > /etc/apt/sources.list.d/runescape.list apt-get
>> update apt-get install -y runescape-launcher
>>
>> I have downloaded the apt sources and have been reading it.
>> However its fairly large & complex which will take me a while to
>> figure out. The gpg key was fairly easy, but I don't see how
>> apt-get uses it yet. I also don't see how apt gets the list of
>> files to download, since there is only a directory given. I can't
>> displayhttp://content.runescape.com/a=946/downloads/ubuntu in a
>> browser.
>>
>> Just wondering if anyone has anything helpful to shorten the
>> process of figuring it out. I'm planning to create a cut down
>> apt-get which just fetches the files, but don't have much time
>> most days.
>>
>>
> In my experience if you're running Gentoo you're better off staying
> in the Gentoo package framework and finding the app you want in a
> portage overlay:
>
> https://gpo.zugaina.org/games-rpg/unix-runescape-client
>

To approximate what the apt-get client actually does; first download
"http://content.runescape.com/a=946/downloads/ubuntu/trusty/Release"
(URL given + distversion + "/Release); note the MD5/SHA1/SHA256 checksums.

Download the 64-bit Packages file from
"http://content.runescape.com/a=946/downloads/ubuntu/dists/trusty/non-free/binary-amd64/Packages",
this will give the name/version/dependencies for every package
distributed from that repo.

From that file, find the "Filename:" field, append that directly to
the URL they gave, so
"http://content.runescape.com/a=946/downloads/ubuntu/pool/non-free/r/runescape-launcher/runescape-launcher_2.2.2_amd64.deb".

This file declares the following dependencies:

Ubuntu
        Gentoo Equivalent
libsdl2-2.0-0 (>= 2.0.2+dfsg1-3ubuntu1.1)
        >=media-libs/libsdl2-2.0.2
        [This doesn't appear to actually be used by the executable]
libglew1.10 (>= 1.10.0-3)
        >=media-libs/glew-1.10.0:0/1.10
        [This doesn't appear to actually be used by the executable]
libc6 (>= 2.19-0ubuntu6.6)
        >=sys-libs/glibc-2.19
libcurl3-gnutls (>= 7.35.0-1ubuntu2.5)
        >=net-misc/curl-7.35.0
libstdc++6 (>= 4.8.4-2ubuntu1~14.04)
        >=sys-devel/gcc-4.8.4[cxx]
libgcc1 (>= 1:4.9.1-0ubuntu1)
        >=sys-devel/gcc-4.9.1
libvorbisenc2 (>= 1.3.2-1.3ubuntu1)
	>=media-libs/libvorbis-1.3.2
        [This doesn't appear to actually be used by the executable]
libwebkitgtk-1.0-0 (>= 2.4.8-1ubuntu1~ubuntu14.04.1)
	>=net-libs/webkit-gtk-2.4.8:2 (I think)

The package also depends on the following shared libraries, not
exposed above:

dev-libs/glib:2
        libglib-2.0.so.0
        libgobject-2.0.so.0
media-libs/libpng:1.2
        libpng12.so.0
x11-libs/libXxf86vm
        libXxf86vm.so.1
x11-libs/gtk+:2
        libgdk-x11-2.0.so.0
        libgtk-x11-2.0.so.0
x11-libs/gdk-pixbuf:2
        libgdk_pixbuf-2.0.so.0
x11-libs/libX11
        libX11.so.6
x11-libs/cairo
        libcairo.so.2
x11-libs/libSM
        libSM.so.6
x11-libs/pango
        libpango-1.0.so.0
        libpangocairo-1.0.so.0

To extract the .deb, if you don't have dpkg installed, you can use `ar
x ./runescape-launcher_2.2.2_amd64.deb data.tar.xz` to get a tarball
named "data.tar.xz" that contains the actual binary package.

Note that the only thing that was really Gentoo-specific in the above
was the mapping of libraries to package names/slots/versions.
Everything else is "Generic Linux amd64" :).

-- 
Jonathan Callen