Difference between revisions of "SageMath"

Revision as of 08:04, March 20, 2017

SageMath is mathematical software with features covering many aspects of mathematics, including algebra, combinatorics, numerical mathematics, number theory, and calculus.

Screenshot from SageMath

Installation

There are two overlays that are needed to get Sage installed. The science-overlay and the sage-on-gentoo-overlay.

Install and configure layman and overlays

Using 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 Update your layman list:

root # layman -L

This overlay depends on science overlay. You will also need to add it, if not already installed:

root # layman -a science

Finally, add this overlay:

root # layman -a sage-on-gentoo

Ebuilds unmask

Before being able to install you may need to unmask the required ebuilds. You can use already-made files, shipped with overlay, such as: sage-on-gentoo/package.unmask/sage

To use this file permanently, place symbolic link to this file into your /etc/portage/package.unmask directory: <path-to-layman> is usually /var/lib/layman (this path used to be /usr/local/portage/layman for older version of layman).

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

Notice, that in this example, portage's package.unmask is directory , make sure to apply masks entries according to your preferred way of masks handle (directory or a flat file).

Use flags

Since Sage's ebuild requires its dependencies to be built with several USE- flags a standard package.use file is provided as well:

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

On a stable build installations you may also need following file:

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

Note

With sage 6.8 a 99sage-doc-bin file installed that makes it easy to use pre-built html documentation. This is recommended for ~arch users.

Installing Sage

root # emerge -va 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), report this behavior.

@@ Line 7: / Line 7: @@
 === Install and configure layman and overlays ===
-# 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
+====Using layman====
-# Update your layman list:
+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
- layman -L
+Update your layman list:
+{{console|body=
+###i## layman -L
+}}
-This overlay depends on the science overlay. So you will need to add it as well if it is not already installed:
+This overlay depends on science overlay. You will also need to add it, if not already installed:
- layman -a science
+{{console|body=
+###i## layman -a science
+}}
-Finally add this overlay:
+Finally, add this overlay:
- layman -a sage-on-gentoo
+{{console|body=
+###i## layman -a sage-on-gentoo
+}}
+====Ebuilds unmask====
+Before being able to install you may need to unmask the required ebuilds. You can use already-made files, shipped with overlay, such as:
+<code>sage-on-gentoo/package.unmask/sage</code>
- Note
+To use this file permanently, place symbolic link to this file into your <code>/etc/portage/package.unmask</code> directory:
-  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.
+<path-to-layman> is usually <code>/var/lib/layman</code> (this path used to be <code>/usr/local/portage/layman</code> for older version of layman).
+{{console|body=
+  ###i##   ln -s <path-to-layman>/sage-on-gentoo/package.unmask/sage  /etc/portage/package.unmask/sage
+}}
+Notice, that in this example, portage's package.unmask is directory , make sure to apply masks entries according to your preferred way of masks handle (directory or a flat file).
-# Unmask ebuilds: Before being able to install you may need to unmask the required ebuilds. You can make use of the following files, which already contain all required entries:
+====Use flags====
-    sage-on-gentoo/package.unmask/sage
+Since Sage's ebuild requires its dependencies to be built with several USE- flags a standard package.use file is provided as well:
+{{console|body=
+ ###i##   ln -s <path-to-layman>/sage-on-gentoo/package.use/sage /etc/portage/package.use/sage
+}}
-To use this file permanently, place symbolic link to this file into your /etc/portage/package.unmask directory:
+On a stable build installations you may also need following file:
-<path-to-layman> is usually /var/lib/layman (this path used to be /usr/local/portage/layman for older version of layman).
+{{console|body=
+###i##    ln -s <path-to-layman>/sage-on-gentoo/package.use/sage-unstable /etc/portage/package.use/sage-unstable
+}}
-    ln -s <path-to-layman>/sage-on-gentoo/package.unmask/sage \
+{{Note|With sage 6.8 a <code>99sage-doc-bin</code> file installed that makes it easy to use pre-built html documentation. This is recommended for ~arch users.}}
-          /etc/portage/package.unmask/sage
-Otherwise, simply copy it into the respective directory for a one-time fix.
-# Add use-flags for ebuild: Since Sage's ebuild requires its dependencies to be built with several USE- flags a standard package.use file is provided as well:
-    ln -s <path-to-layman>/sage-on-gentoo/package.use/sage \
-          /etc/portage/package.use/sage
-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
-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.
-# Install Sage: Type:
+====Installing Sage====
+{{console|body=
-    emerge -va sage
+ ###i## emerge -va 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.
+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), report this behavior.