I updated for the first time in a while (from generation 23 to 24). I got an error on most common uses of nix-env (-i, -e, -qa). I rolled back to 23 and everything worked, and here is s transcript of the update to generation 25.
[~/tmp]$ nix-channel --update downloading Nix expressions from ‘ https://nixos.org/releases/nixpkgs/nixpkgs-16.03pre70404.d6d88aa//nixexprs.tar.xz ’... % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 5948k 100 5948k 0 0 235k 0 0:00:25 0:00:25 --:--:-- 346k unpacking channels... created 2 symlinks in user environment [~/tmp]$ nix-env -qa error: attribute ‘replaceStrings’ missing, at /nix/store/mf3c1kdjm0llfb9zdsjbqg5fjbjypyil-nixpkgs-16.03pre70404.d6d88aa/nixpkgs/pkgs/applications/editors/geany/with-vte.nix:2:12 [~/tmp]$ nix-env -q geany error: selector ‘geany’ matches no derivations [~/tmp]$ nix-channel --rollback switching from generation 25 to 24 [~/tmp]$ nix-env -qa error: attribute ‘replaceStrings’ missing, at /nix/store/1fa3vwkgix78i5disxfamcwk1sv9mgyd-nixpkgs-16.03pre70175.b2588ad/nixpkgs/pkgs/applications/editors/geany/with-vte.nix:2:12 [~/tmp]$ nix-channel --rollback 23 switching from generation 24 to 23 [~/tmp]$ nix-env -qa ...(works)... Geany would appear to be a text editor of which I haven't previously heard and I don't use. Sorry for noobness and thanks for any insight. chris -- "Context" is the mother of prevarication. -- Ken White
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