Add flag --override-input to override specific lock file entries

E.g.

  $ nix flake update ~/Misc/eelco-configurations/hagbard \
    --override-input 'dwarffs/nixpkgs' ../my-nixpkgs

overrides the 'nixpkgs' input of the 'dwarffs' input of the top-level
flake.

Fixes #2837.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index f7e329b49..2852a627d 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -43,7 +43,7 @@ public:
 
     LockedFlake lockFlake()
     {
-        return flake::lockFlake(*getEvalState(), getFlakeRef(), getLockFileMode());
+        return flake::lockFlake(*getEvalState(), getFlakeRef(), getLockFileMode(), lockFlags);
     }
 };