Hi,
When passed a random derivation name, "nix-env --set-flag" just exits
silently. How about something along the lines of the attached patch?
Thanks,
Ludovic.
Index: src/nix-env/nix-env.cc
===================================================================
*** src/nix-env/nix-env.cc (revision 12181)
--- src/nix-env/nix-env.cc (working copy)
*************** static void opSetFlag(Globals & globals,
*** 762,767 ****
--- 762,773 ----
string flagValue = *arg++;
DrvNames selectors = drvNamesFromArgs(Strings(arg, opArgs.end()));
+ if (selectors.empty ())
+ {
+ printMsg (lvlError, format("no derivation named `%1%'") % opArgs);
+ return;
+ }
+
/* Load the currently installed derivations. */
PathLocks lock;
lockProfile(lock, globals.profile);
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