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| = Sage 9.1 Release Tour = in progress (2020) <<TableOfContents>> == Python 3 transition == SageMath 9.0 was the first version of Sage running on Python 3 by default. Sage 9.1 continues to support Python 2. See [[Python3-Switch]] for more details == Portability improvements, increased use of system packages == The SageMath distribution continues to vendor versions of required software packages ("SPKGs") that work well together. In order to reduce compilation times and the size of the SageMath installation, a [[https://trac.sagemath.org/ticket/27330|development effort ongoing since the 8.x release series]] has made it possible to '''use many system packages provided by the OS distribution''' instead of building SageMath's own copies. This so-called "spkg-configure" mechanism runs at the beginning of a build from source, during the `./configure` phase. Sage 9.1 is adding many packages to this mechanism. New in Sage 9.1 is also a '''database of system packages''' equivalent to our SPKGs. At the end of a `./configure` run, you will see messages like the following: {{{ configure: notice: the following SPKGs did not find equivalent system packages: arb boost boost_cropped bzip2 ... yasm zeromq zlib checking for the package system in use... debian configure: hint: installing the following system packages is recommended and may avoid building some of the above SPKGs from source: configure: $ sudo apt-get install libflint-arb-dev ... yasm libzmq3-dev libz-dev configure: After installation, re-run configure using: configure: $ ./config.status --recheck && ./config.status }}} For developers who wish to help improve the portability of SageMath, there is a new power tool: A '''tox configuration''' that automatically builds and tests SageMath within Docker containers running various Linux distributions (`ubuntu-trusty` through `-focal`, `debian-jessie` through `-sid`, `linuxmint-17` through `-19.3`, `fedora-26` through `-32`, `centos-7` and `-8`, `archlinux`, `slackware-14.2`), each in several configurations regarding what system packages are installed. Thus, it is no longer necessary for developers to have access to a machine running `fedora-29`, say, to verify whether the Sage distribution works there; instead, you just type: {{{ tox -e docker-fedora-29-standard -- build ptest` }}} The `Dockerfile`s are generated automatically by using the same database of system packages that provides information to users. See the new section on "portability testing" in the Developer's Guide for details. == Availability of Sage 9.1 in distributions == (TBD) == More details == - Release announcements: See https://groups.google.com/forum/#!forum/sage-release - [[https://trac.sagemath.org/query?milestone=sage-9.1&groupdesc=1&group=status&max=1500&col=id&col=summary&col=author&col=reviewer&col=time&col=changetime&col=component&col=keywords&order=component|Trac tickets with milestone 9.1]] |
