(Unofficial) Gentoo Overlay for Sage- and Sage-related ebuilds
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README.rst

PROJECT SUMMARY

Sage-on-Gentoo provides split ebuilds (http://www.gentoo.org) for the computer algebra system SAGE (http://www.sagemath.org).

CONTACT

If you have problems with sage-on-gentoo or have suggestions talk to us on #gentoo-science on freenode

http://www.gentoo.org/main/en/irc.xml

or write a mail to the "gentoo-science" mailing list

http://www.gentoo.org/main/en/lists.xml

An archive listing past mails may be found at

http://archives.gentoo.org/gentoo-science/

QUICK INSTALLATION GUIDE

  1. INSTALL AND CONFIGURE LAYMAN: The preferred way of getting sage-on-gentoo is layman. Make sure layman is installed with USE=git and correctly configured. You may find a guide for layman at:

    http://www.gentoo.org/proj/en/overlays/userguide.xml

  2. ADD OUR OVERLAY: Update your layman list:

    layman -L
    

    This overlay now depends on the science overlay. So you will need to add it as well if it is not already installed:

    layman -a science
    

    Finally add this overlay:

    layman -a sage-on-gentoo
    

Note

Steps 3 and 4 may not be fully or at all necessary on your system. You might want to try skipping to step 5 first, and if it doesn't work, coming back and doing steps 3 and 4.

  1. UNMASK EBUILDS: Before being able to install you may need to unmask the required ebuilds. If you are using Gentoo/unstable or Funtoo (i.e. you have a line like ACCEPT_KEYWORDS=~arch in your /etc/portage/make.conf) you can at least skip the keywords entries, but the unmask entries may still be relevant. You can make use of the following files, which already contain all required entries:

    sage-on-gentoo/package.unmask/sage
    sage-on-gentoo/package.keywords/sage
    sage-on-gentoo/package.keywords/sage.prefix (for prefix users only)
    

    To use these files permanently, place symbolic links to those files into your /etc/portage/package.unmask and /etc/portage/package.keywords/ directories, respectively:

    ln -s <path-to-layman>/sage-on-gentoo/package.unmask/sage \
          /etc/portage/package.unmask/sage
    ln -s <path-to-layman>/sage-on-gentoo/package.keywords/sage \
          /etc/portage/package.keywords/sage
    

    Otherwise, simply copy them into the respective directories for a one-time fix.

    The sage.prefix files contains keywords for ebuilds lacking any prefix keywords.

  2. ADD USE-FLAGS FOR EBUILDS: Since Sage's ebuild requires its dependencies to be built with several USE- flags we provide a standard package.use file as well:

    ln -s <path-to-layman>/sage-on-gentoo/package.use/sage \
          /etc/portage/package.use/sage
    

    If you are using unstable or Funtoo you may also need the following file:

    ln -s <path-to-layman>/sage-on-gentoo/package.use/sage-unstable \
          /etc/portage/package.use/sage-unstable
    

    <path-to-layman> is usually /var/lib/layman (this path used to be /usr/local/portage/layman for older version of layman).

    Note: For sage 6.8 we also provide a file 99sage-doc-bin that makes it easy to use pre-built html documentation. This is recomended for ~arch users.

  3. INSTALL SAGE: Type:

    emerge -va sage
    

    to install sage; please note that this will pull in a lot of dependencies. If you can not proceed with this step (because of circular dependencies, missing USE-flags, and so on) please report this behavior.

  4. UPDATE YOUR LOCAL OVERLAY: To update your local copy of sage-on-gentoo simply type:

    layman -S
    

    Do not forget to update the main portage tree as well:

    emerge --sync
    

    After that you may run:

    emerge -vuDNa world
    

    or a similar command to check for updates.

SAGE ON GENTOO PREFIX

A Prefix enables you to install Gentoo on different OS (e.g Linux, FreeBSD, MacOS, Solaris and even Windows). Thus, you may be able to run Sage on Gentoo e.g. on a Debian Linux. For a complete introduction into Gentoo Prefix and how to set it up visit

http://www.gentoo.org/proj/en/gentoo-alt/prefix/

After having a working Prefix you may setup sage-on-gentoo in a Prefix by following the quick installation guide.

Currently, we support every Linux running with x86 or amd64 instruction sets, in particular the following architectures:

  • ~amd64-linux
  • ~x86-linux