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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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6
src/libstore/local-store.hh
View file

@ -89,11 +89,11 @@ public:
bool querySubstitutablePathInfo(const Path & substituter,
const Path & path, SubstitutablePathInfo & info);
Path addToStore(const Path & srcPath, bool fixed = false,
bool recursive = false, string hashAlgo = "",
Path addToStore(const Path & srcPath,
bool recursive = true, string hashAlgo = "sha256",
PathFilter & filter = defaultPathFilter);
Path addTextToStore(const string & suffix, const string & s,
Path addTextToStore(const string & name, const string & s,
const PathSet & references);
void exportPath(const Path & path, bool sign,