adding nix configs

fish/config.fish

@@ -210,10 +210,12 @@ alias yeet "paru -Rns"
 alias ls "exa -l"
 alias la "exa -la"
 alias mpf "mpv --profile=fast"
+alias mps "mpv --profile=slow"
 alias suspend "systemctl suspend"
 alias ec "emacsclient -t"
 alias ecc "emacsclient -c"
 alias mkdir "mkdir -pv"
+alias upnix "update-nix"
 
 ### Start X at login
 if status is-login
@@ -231,3 +233,4 @@ macchina
 # end
 
 # fm6000 -r -c blue
+any-nix-shell fish --info-right | source