April 15, 2011

this week: apt 0.8.14 (regex pinning), stable updates, and bug triaging

python-apt 0.8.0~exp2 bug fix release

On Tuesday, I uploaded python-apt 0.8.0~exp2 to experimental, fixing about 10 bugs reported in Ubuntu and Debian bug trackers. It should know even convert integers correctly on all architectures, previously we could have passed long via varargs where int was expected.


Until Thursday, I went through the bug list in Launchpad and closed/fixed/reassigned/merged about 100 bugs in APT and python-apt.

APT & python-apt updates for squeeze

Today, I uploaded updates of apt and python-apt to stable. They include support for xz and parsing multi-arch dependencies, as wanted by ftpmasters.

APT 0.8.14 and wildcards/regular expression pinning

Today, I uploaded apt 0.8.14 to Debian unstable, introducing support for pinning using glob() like Syntax and POSIX extended regular expressions. Let’s say we want to pin all packages starting with gnome or kde to 990. The following example does this, using glob-like patterns for gnome, and a regular expression enclosed in / for kde: Package: gnome* /^kde/ Pin: release a=experimental Pin-Priority: 990

This closes 10-year-old Bug#121132 in Debian. Have fun with this feature, but please note that it may not be the fastest thing on earth, as it checks every package in the cache on initialization of such queries, which may take a few 10 ms.

Since some time already, it’s also possible to use such expressions for the Pin field. Thus users of Ubuntu releases could use the following piece of preferences to pin all packages in archives starting with lucid (e.g. lucid, lucid-updates) to 990: Package: * Pin: release a=lucid* Pin-Priority: 990

Those types of pins do not have the negative performance impact of complex expressions in the Package header, as they are only checked against a smaller set of packages, or if “Package: *”, simply checked against the package files in the cache.

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