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* Unify the treatment of sources copied to the store, and recursive

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SHA-256 outputs of fixed-output derivations.  I.e. they now produce
  the same store path:

  $ nix-store --add x
  /nix/store/j2fq9qxvvxgqymvpszhs773ncci45xsj-x

  $ nix-store --add-fixed --recursive sha256 x
  /nix/store/j2fq9qxvvxgqymvpszhs773ncci45xsj-x

  the latter being the same as the path that a derivation

    derivation {
      name = "x";
      outputHashAlgo = "sha256";
      outputHashMode = "recursive";
      outputHash = "...";
      ...
    };

  produces.

  This does change the output path for such fixed-output derivations.
  Fortunately they are quite rare.  The most common use is fetchsvn
  calls with SHA-256 hashes.  (There are a handful of those is
  Nixpkgs, mostly unstable development packages.)
  
* Documented the computation of store paths (in store-api.cc).
This commit is contained in:
Eelco Dolstra 2008-12-03 15:06:30 +00:00
parent 09bc0c502c
commit 64519cfd65
12 changed files with 191 additions and 79 deletions
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4
src/nix-worker/nix-worker.cc
View file

@ -290,7 +290,7 @@ static void performOp(unsigned int clientVersion,
case wopAddToStore: {
/* !!! uberquick hack */
string baseName = readString(from);
bool fixed = readInt(from) == 1;
readInt(from); /* obsolete; was `fixed' flag */
bool recursive = readInt(from) == 1;
string hashAlgo = readString(from);
@ -300,7 +300,7 @@ static void performOp(unsigned int clientVersion,
restorePath(tmp2, from);
startWork();
Path path = store->addToStore(tmp2, fixed, recursive, hashAlgo);
Path path = store->addToStore(tmp2, recursive, hashAlgo);
stopWork();
writeString(path, to);