feat: initial commit; NixOS Era

pkgs/fish/functions/round.fish

@@ -0,0 +1,18 @@
+function round
+	argparse -n 'round' -i 'p/precision=!_validate_int' -- $argv
+	or return 1;
+
+	set -l value (string trim -- $argv)
+	if [ -z $value ]
+		echoerr 'round: no input'
+		return 1
+	end
+
+	set -l precision 1
+    if set -q _flag_precision
+		set precision (math "10 ^ $_flag_precision")
+	end
+
+	set value (math "$value * $precision")
+	echo (math "round($value) / $precision")
+end