diff options
| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2003-07-10T15·11+0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2003-07-10T15·11+0000 |
| commit | 1d1c3691d2fdf5aad0baceadd8596f23c1e0e1fa (patch) | |
| tree | c89123e33796e3408b613e1a824bcc66ad30395e /corepkgs | |
| parent | d072485d2895d01dbbab1d899418726e3349343f (diff) | |
* The policy-free derivate sharing now *almost* works. :-) For any
hash for which no local expansion is available, Nix can execute a `substitute' which should produce a path with such a hash. This is policy-free since Nix does not in any way specify how the substitute should work, i.e., it's an arbitrary (unnormalised) fstate expression. For example, `nix-pull' registers substitutes that fetch Nix archives from the network (through `wget') and unpack them, but any other method is possible as well. This is an improvement over the old Nix sharing scheme, which had a policy (fetching through `wget') built in. The sharing scheme doesn't work completely yet because successors from fstate rewriting have to be registered on the receiving side. Probably the whole successor stuff can be folded up into the substitute mechanism; this would be a nice simplification.
Diffstat (limited to 'corepkgs')
| -rw-r--r-- | corepkgs/Makefile.am | 2 | ||||
| -rw-r--r-- | corepkgs/nar/unnar.fix | 8 | ||||
| -rw-r--r-- | corepkgs/nar/unnar.sh | 3 |
3 files changed, 13 insertions, 0 deletions
diff --git a/corepkgs/Makefile.am b/corepkgs/Makefile.am index 9ce9c8c790eb..9298865bff2f 100644 --- a/corepkgs/Makefile.am +++ b/corepkgs/Makefile.am @@ -6,3 +6,5 @@ install-data-local: $(INSTALL) -d $(datadir)/fix/nar $(INSTALL_DATA) nar/nar.fix $(datadir)/fix/nar $(INSTALL_DATA) nar/nar.sh $(datadir)/fix/nar + $(INSTALL_DATA) nar/unnar.fix $(datadir)/fix/nar + $(INSTALL_DATA) nar/unnar.sh $(datadir)/fix/nar diff --git a/corepkgs/nar/unnar.fix b/corepkgs/nar/unnar.fix new file mode 100644 index 000000000000..db97750aaa18 --- /dev/null +++ b/corepkgs/nar/unnar.fix @@ -0,0 +1,8 @@ +Function(["nar", "name"], + Package( + [ ("name", Var("name")) + , ("build", Relative("nar/unnar.sh")) + , ("nar", Var("nar")) + ] + ) +) \ No newline at end of file diff --git a/corepkgs/nar/unnar.sh b/corepkgs/nar/unnar.sh new file mode 100644 index 000000000000..e6a3f3c1fe19 --- /dev/null +++ b/corepkgs/nar/unnar.sh @@ -0,0 +1,3 @@ +#! /bin/sh + +/tmp/nix/bin/nix --restore "$out" < $nar || exit 1 |