Add the nix-store --serve command

This is essentially the substituter API operating on the local store,
which will be used by the ssh substituter. It runs in a loop rather than
just taking one command so that in the future nix will be able to keep
one connection open for multiple instances of the substituter.

Signed-off-by: Shea Levy <shea@shealevy.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh
index a82fe3221639..57cf5179485c 100644
--- a/src/libstore/store-api.hh
+++ b/src/libstore/store-api.hh
@@ -248,6 +248,10 @@ public:
        `nix-store --register-validity'. */
     string makeValidityRegistration(const PathSet & paths,
         bool showDerivers, bool showHash);
+
+    /* Serve the store for ssh substituters by taking commands
+     * from in and printing results to out */
+    void serve(Source & in, Sink & out, bool sign);
 };