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* Re-enable support for substitutes in the normaliser.

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* A better substitute mechanism.

  Instead of generating a store expression for each store path for
  which we have a substitute, we can have a single store expression
  that builds a generic program that is invoked to build the desired
  store path, which is passed as an argument.

  This means that operations like `nix-pull' only produce O(1) files
  instead of O(N) files in the store when registering N substitutes.
  (It consumes O(N) database storage, of course, but that's not a
  performance problem).

* Added a test for the substitute mechanism.
  
* `nix-store --substitute' reads the substitutes from standard input,
  instead of from the command line.  This prevents us from running
  into the kernel's limit on command line length.
This commit is contained in:
Eelco Dolstra 2004-06-20 19:17:54 +00:00
parent bafb2357d1
commit 112ee89501
10 changed files with 444 additions and 108 deletions
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3
tests/Makefile.am
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@ -17,9 +17,10 @@ dependencies.sh: dependencies.nix
locking.sh: locking.nix
parallel.sh: parallel.nix
build-hook.sh: build-hook.nix
substitutes.sh: substitutes.nix substituter.nix
TESTS = init.sh simple.sh dependencies.sh locking.sh parallel.sh \
build-hook.sh
build-hook.sh substitutes.sh
XFAIL_TESTS =