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Add download-via-ssh substituter

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This substituter connects to a remote host, runs nix-store --serve
there, and then forwards substituter commands on to the remote host and
sends their results to the calling program. The ssh-substituter-hosts
option can be specified as a list of hosts to try.

This is an initial implementation and, while it works, it has some
limitations:

* Only the first host is used
* There is no caching of query results (all queries are sent to the
  remote machine)
* There is no informative output (such as progress bars)
* Some failure modes may cause unhelpful error messages
* There is no concept of trusted-ssh-substituter-hosts

Signed-off-by: Shea Levy <shea@shealevy.com>
This commit is contained in:
Shea Levy 2014-02-08 00:05:46 -05:00
parent 5671188eb2
commit 64e23d0a38
6 changed files with 168 additions and 0 deletions
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Makefile
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@ -10,6 +10,7 @@ makefiles = \
src/nix-instantiate/local.mk \
src/nix-env/local.mk \
src/nix-daemon/local.mk \
src/download-via-ssh/local.mk \
src/nix-log2xml/local.mk \
src/bsdiff-4.3/local.mk \
perl/local.mk \