Eelco Dolstra 1aa19b24b2 Add a flag ‘--check’ to verify build determinism ... The flag ‘--check’ to ‘nix-store -r’ or ‘nix-build’ will cause Nix to redo the build of a derivation whose output paths are already valid. If the new output differs from the original output, an error is printed. This makes it easier to test if a build is deterministic. (Obviously this cannot catch all sources of non-determinism, but it catches the most common one, namely the current time.) For example: $ nix-build '<nixpkgs>' -A patchelf ... $ nix-build '<nixpkgs>' -A patchelf --check error: derivation `/nix/store/1ipvxsdnbhl1rw6siz6x92s7sc8nwkkb-patchelf-0.6' may not be deterministic: hash mismatch in output `/nix/store/4pc1dmw5xkwmc6q3gdc9i5nbjl4dkjpp-patchelf-0.6.drv' The --check build fails if not all outputs are valid. Thus the first call to nix-build is necessary to ensure that all outputs are valid. The current outputs are left untouched: the new outputs are either put in a chroot or diverted to a different location in the store using hash rewriting.		2014-02-18 01:01:14 +01:00
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dotgraph.cc	Comment out dead code in `nix-store'.	2010-05-31 16:36:20 +00:00
dotgraph.hh	Use "#pragma once" to prevent repeated header file inclusion	2012-07-18 14:59:03 -04:00
local.mk	Update Makefile variable names	2014-02-01 13:54:38 +01:00
nix-store.cc	Add a flag ‘--check’ to verify build determinism	2014-02-18 01:01:14 +01:00
serve-protocol.hh	nix-store --serve: Use a versioned protocol	2014-02-10 07:43:13 -05:00
xmlgraph.cc	Add XML output to `nix-store'.	2010-05-31 16:36:24 +00:00
xmlgraph.hh	Use "#pragma once" to prevent repeated header file inclusion	2012-07-18 14:59:03 -04:00