* Allow certain operations to succeed even if we don't have write

  permission to the Nix store or database.  E.g., `nix-env -qa' will
  work, but `nix-env -qas' won't (the latter needs DB access).  The
  option `--readonly-mode' forces this mode; otherwise, it's only
  activated when the database cannot be opened.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
index 44794d147..52f2a0a0b 100644
--- a/src/libstore/globals.cc
+++ b/src/libstore/globals.cc
@@ -15,3 +15,5 @@ bool tryFallback = false;
 Verbosity buildVerbosity = lvlInfo;
 
 unsigned int maxBuildJobs = 1;
+
+bool readOnlyMode = false;