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zstd is a compression algorithm developed by facebook. At level 19,
it is about 6% worse in size than xz -6, but decompression is multiple
times faster, saving about 40% install time, especially with eatmydata
on cloud instances.
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This reduces the number of syscalls to about 140 from about
350 or so, significantly reducing security risks.
Also change prepare-release to ignore the architecture lists
in the build dependencies when generating the build-depends
package for travis.
We might want to clean up things a bit more and/or move it
somewhere else.
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This automatically removes any old apt-transport-https, as
apt now Breaks it unversioned.
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We do not actually test without these libraries, and it likely
would not build without them due to them being NOTFOUND and CMake
exiting with an error, so let's just mark them as required.
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We previously dlopen()ed it, but it seems painful to do that
without any real gain, except for possibly not having libudev
in the address space and not having code #ifdefed for Linux.
The latter means that we are a bit more likely to break stuff
for non-Linux systems now if we play with udev, but at least
we don't end up with it silently breaking because of a libudev
ABI break.
The existing function pointers in the struct were renamed and
kept for compat purposes.
Fixes Debian/apt#48
Also adjust prepare-release to strip [linux-any] from build-depends
for travis.
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This makes the code easier to read.
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This makes no sense. We need both entries in the cache, as
we check FORCE_CURL in the test suite.
Gbp-Dch: ignore
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The old curl based method is still available as 'curl',
'curl+http', and 'curl+https'.
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This makes testing easier and prepares us for the
transition.
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The http method will eventually replace the curl-based
https method, but for now, this is an opt-in experiment
that can be enabled by setting Dir::Bin::Methods::https
to "http".
Known issues:
- We do not support HTTPS proxies yet
- We do not support proxying HTTPS connections yet (CONNECT)
- IssuerCert and SslForceVersion are unsupported
Gbp-Dch: Full
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We are including sys/statvfs.h, not statvfs.h, so make sure our
dummy in the correct spot.
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We are basically frozen now, but (a) this wildcard thing
is a bit "explosive" to call this RC and (b) you never know
if you might need to add a new tiny feature and freeze can
be long...
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This is somewhat more portable than just hardcoding perl or in the
triehash case /usr/bin/perl in the shebang.
Thanks: Guillem Jover for the hint
Gbp-Dch: ignore
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Our implementation of wildcards was rudimentary. It worked for some
common ones, but it was also broken: For example, armel matched any-armel,
but should match any-arm.
With this commit, we load the correct tables from dpkg. Supported are
both triplets and quadruplet tables (the latter introduced in dpkg 1.18.11).
There are some odd things we have to deal with in the cache filter for
historical and API reasons:
* The character "*" must be accepted as an alternative to any - in fact
it may appear anywhere in the wildcard as we also allow fnmatch() style
wildcard matching on the commandline.
* The code might get passed an arch with a minus at the end, for example
the cmdline "install apt:any-arm-" will first try to check if any-arm-
is a valid architecture. We deal with this by rejecting any wildcard
ending in a minus.
* Triplets are actually implemented by extending them to faux quadruplets
- by prepending a "base" component for the architecture tuple, and "any"
if there is a wildcard component.
Once we have constructed a wildcard, it is transformed into an fnmatch()
expression for historical reasons. In the future, we should really get a
tuple class and implement matching in a better, more explicit way.
This does for now though - it passes all the test cases and accepts all
things it should accept.
Closes: #748936
Thanks: James Clarke <jrtc27@jrtc27.com> for the initial patch
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This allows us to easily test coverage
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