* Simplify the substitute mechanism:

  - Drop the store expression.  So now a substitute is just a
    command-line invocation (a program name + arguments).  If you
    register a substitute you are responsible for registering the
    expression that built it (if any) as a root of the garbage
    collector.
  - Drop the substitutes-rev DB table.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/nix-store/help.txt b/src/nix-store/help.txt
index a3dcdebb6faa..cbded730e866 100644
--- a/src/nix-store/help.txt
+++ b/src/nix-store/help.txt
@@ -11,6 +11,7 @@ Operations:
 
   --successor: register a successor expression (dangerous!)
   --substitute: register a substitute expression (dangerous!)
+  --clear-substitute: clear all substitutes
   --validpath: register path validity (dangerous!)
   --isvalid: check path validity