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21655a70f5
Nix expressions.
To subscribe to a channel (needs to be done only once):
nix-channel --add \
http://catamaran.labs.cs.uu.nl/dist/nix/channels/nixpkgs-unstable
This just adds the given URL to ~/.nix-channels (which can also be
edited manually).
To update from all channels:
nix-channel --update
This fetches the latest expressions and pulls cache manifests. The
default Nix expression (~/.nix-defexpr) is made to point to the
conjunction of the expressions downloaded from all channels.
So to update all installed derivations in the current user
environment:
nix-channel --update
nix-env --upgrade '*'
If you are really courageous, you can put this in a cronjob or
something.
You can subscribe to multiple channels. It is not entirely clear
what happens when there are name clashes between derivations from
different channels. From nix-env/main.cc it appears that the one
with the lowest (highest?) hash will be used, which is pretty
meaningless.
24 lines
No EOL
338 B
Bash
24 lines
No EOL
338 B
Bash
#! @shell@ -e
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export PATH=/bin:/usr/bin # !!! impure
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mkdir $out
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mkdir $out/tmp
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cd $out/tmp
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expr=$out/default.nix
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echo '[' > $expr
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nr=0
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for i in $inputs; do
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echo "unpacking $i"
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@bunzip2@ < $i | tar xvf -
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mv * ../$nr # !!! hacky
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echo "(import ./$nr)" >> $expr
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nr=$(($nr + 1))
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done
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echo ']' >> $expr
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cd ..
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rmdir tmp |