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(which should therefore be backwards compatible).
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sure that it works as expected when you pass it a derivation. That
is, we have to make sure that all build-time dependencies are built,
and that they are all in the input closure (otherwise remote builds
might fail, for example). This is ensured at instantiation time by
adding all derivations and their sources to inputDrvs and inputSrcs.
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the size of the download isn't known in advance.
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downloaded files; rather, check the hash of the unpacked store
path.
When the server produces bzipped NAR archives on demand (like Hydra
does), the hash of the file is not known in advance; it's streamed
from the server. Thus the manifest doesn't contain a hash for the
bzipped NAR archive. However, the server does know the hash of the
*uncompressed* NAR archive (the "NarHash" field), since it's stored
in the Nix database (nix-store -q --hash /nix/store/bla). So we use
that instead for checking the integrity of the download.
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scan for runtime dependencies (i.e. the local machine shouldn't do a
scan that the remote machine has already done). Also pipe directly
into `nix-store --import': don't use a temporary file.
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(e.g. an SSH connection problem) and permanent failures (i.e. the
builder failed). This matters to Hydra (it wants to know whether it
makes sense to retry a build).
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makes more sense for the build farm, otherwise every nix-store
invocation will lead to at least one local build. Will come up with
a better solution later...
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necessary that at least one build hook doesn't return "postpone",
otherwise nix-store will barf ("waiting for a build slot, yet there
are no running children"). So inform the build hook when this is
the case, so that it can start a build even when that would exceed
the maximum load on a machine.
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nix-store process when the connection is interrupted.
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list like
root@example.org x86_64-linux /root/.ssh/id_buildfarm 1
root@example.org i686-darwin /root/.ssh/id_buildfarm 1
This is possible when the Nix installation on example.org itself has
remote builds enabled.
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derivation should be a source rather than a derivation dependency of
the call to the NAR derivation. Otherwise the derivation (and all
its dependencies) will be built as a side-effect, which may not even
succeed.
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dependency. `storePath /nix/store/bla' gives exactly the same
result as `toPath /nix/store/bla', except that the former includes
/nix/store/bla in the dependency context of the string.
Useful in some generated Nix expressions like nix-push, which now
finally does the right thing wrt distributed builds. (Previously
the path to be packed wasn't an explicit dependency, so it wouldn't
be copied to the remote machine.)
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installed from releases, not only from SVN.
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Common code in local build package sources refactored out in a function; before building the real set of derivations needed is found (slightly slower for only one build strategy, but less garbage on output and better performance for multiple build strategies).
Now you have full choice of best-effort build regardless of method (substituters or actual build), using substituters, building only fixed derivations (should get you all the downloads) and local build without even trying substituters.
Some minor fix in the help text about behavior with no package sources.
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or only use substituters. Oh, and add possibility to use : for things like /etc/nixos/nixpkgs:-A:gnused
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again. (After the previous substituter mechanism refactoring I
didn't update the code that obtains the references of substitutable
paths.) This required some refactoring: the substituter programs
are now kept running and receive/respond to info requests via
stdin/stdout.
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requires that $NIXPKGS_ALL points at a Nixpkgs tree.
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can do operations like "nix-store -qR <path>" even without the Nix
daemon).
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it only does something if $NIX_OTHER_STORES (not really a good
name...) is set.
* Do globbing on the elements of $NIX_OTHER_STORES. E.g. you could
set it to /mnts/*/nix or something.
* Install substituters in libexec/nix/substituters.
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stores (typically remote Nix stores mounted via e.g. NFS, or the Nix
store on the NixOS installation CD). Example use:
$ sshfs foo@example.org:/ /mnt
$ NIX_OTHER_STORES=/mnt/nix \
NIX_SUBSTITUTERS=.../copy-from-other-stores.pl \
nix-env -i foo
This will be especially useful for the installation CD since it
doesn't require a manifest for the CD contents.
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you would like to see built)
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nix-reduce-build. /tmp/nix-export created by nix-http-export.cgi is OK.
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