Eelco Dolstra 86b05ccd54 Only provide builtin.{getFlake,fetchClosure} is the corresponding experimental feature is enabled

This allows writing fallback code like

  if builtins ? fetchClosure then
    builtins.fetchClose { ... }
  else
    builtins.storePath ...

2022-03-25 14:04:18 +01:00

Release X.Y (202?-??-??)

Various nix commands can now read expressions from stdin with --file -.
nix store make-content-addressable has been renamed to nix store make-content-addressed.
New experimental builtin function builtins.fetchClosure that copies a closure from a binary cache at evaluation time and rewrites it to content-addressed form (if it isn't already). Like builtins.storePath, this allows importing pre-built store paths; the difference is that it doesn't require the user to configure binary caches and trusted public keys.

This function is only available if you enable the experimental feature fetch-closure.