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Cherry-picked from the no-manifests branch.
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Since the Perl bindings require shared libraries, this is required on
platforms such as Cygwin where we do a static build.
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Perl on some 32-bit systems needs -D_FILE_OFFSET_BITS=64. See also commit
02f1363e19b7df7cccc3523805bbf4fafe429529.
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This fixes the Darwin build (http://hydra.nixos.org/build/2517380).
Hopefully it doesn't break other builds.
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so that network progress is what's measured
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This command builds or fetches all dependencies of the given
derivation, then starts a shell with the environment variables from
the derivation. This shell also sources $stdenv/setup to initialise
the environment further.
The current directory is not changed. Thus this is a convenient way
to reproduce a build environment in an existing working tree.
Existing environment variables are left untouched (unless the
derivation overrides them). As a special hack, the original value of
$PATH is appended to the $PATH produced by $stdenv/setup.
Example session:
$ nix-build --run-env '<nixpkgs>' -A xterm
(the dependencies of xterm are built/fetched...)
$ tar xf $src
$ ./configure
$ make
$ emacs
(... hack source ...)
$ make
$ ./xterm
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We're already printing progress on stderr, so printing them on stdout
afterwards is kind of useless.
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Without these, Nix fails on 32-bit Linux with Perl 5.14, with a
rather unhelpful error message:
Not a CODE reference at /nix/store/n6kpbacn6nn7i3i735v8j3di8aqyl07v-perl-5.14.2/lib/perl5/5.14.2/i686-linux-thread-multi/DynaLoader.pm
This is likely because the lack of -D_FILE_OFFSET_BITS=64 causes
various Perl structures to not match what the Perl interpreter
expects.
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Mac OS X instead of .dylib, so don't do that.
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scripts.
* Include the version and architecture in the -I flag so that there is
at least a chance that a Nix binary built for one Perl version will
run on another version.
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* Refactor the nix-channel unpacker a bit.
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base-32. (This affects Hydra manifests.)
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‘nix-store --export’.
* Add a Perl module that provides the functionality of
‘nix-copy-closure --to’. This is used by build-remote.pl so it no
longer needs to start a separate nix-copy-closure process. Also, it
uses the Perl API to do the export, so it doesn't need to start a
separate nix-store process either. As a result, nix-copy-closure
and build-remote.pl should no longer fail on very large closures due
to an "Argument list too long" error. (Note that having very many
dependencies in a single derivation can still fail because the
environment can become too large. Can't be helped though.)
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libstore so that the Perl bindings can use it as well. It's vital
that the Perl bindings use the configuration file, because otherwise
nix-copy-closure will fail with a ‘database locked’ message if the
value of ‘use-sqlite-wal’ is changed from the default.
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read the manifest just to check the version and print the number of
paths. This makes nix-pull very fast for the cached cache (speeding
up nixos-rebuild without the ‘--no-pull’ or ‘--fast’ options).
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disk space, and, since they're typically only decompressed once (to
fill the manifest cache), doesn't make things slower.
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DB. This speeds up creating the cache from 16.1s to 7.9s on my
system.
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the Nix:: namespace.
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bindings to be used in Nix's own Perl scripts.
The only downside is that Perl XS and Automake/libtool don't really
like each other, so building is a bit tricky.
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