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1{ ... }:
2{
3 perSystem =
4 { pkgs, ... }:
5 let
6 dataFiles = pkgs.stdenv.mkDerivation {
7 name = "name-generator-data";
8 src = ./.;
9 installPhase = ''
10 mkdir -p $out
11 cp adjectives.txt nouns.txt $out/
12 '';
13 };
14 in
15 {
16 packages.name-generator =
17 (pkgs.writeShellApplication {
18 name = "name-generator";
19 runtimeInputs = [ pkgs.bash ];
20 text = ''
21 # Data files location
22 DATA_DIR="${dataFiles}"
23 # Default separator
24 SEPARATOR="-"
25 # Parse command line options
26 while [[ $# -gt 0 ]]; do
27 case $1 in
28 -s|--separator)
29 SEPARATOR="$2"
30 shift 2
31 ;;
32 -h|--help)
33 echo "Usage: $0 [OPTIONS]"
34 echo "Generate a random name in the format: adjective-noun"
35 echo ""
36 echo "Options:"
37 echo " -s, --separator CHAR Use CHAR as separator (default: -)"
38 echo " -h, --help Show this help message"
39 exit 0
40 ;;
41 *)
42 echo "Unknown option: $1"
43 exit 1
44 ;;
45 esac
46 done
47 # Read adjectives and nouns
48 mapfile -t ADJECTIVES < "$DATA_DIR/adjectives.txt"
49 mapfile -t NOUNS < "$DATA_DIR/nouns.txt"
50 # Select random adjective and noun
51 ADJ_INDEX=$((RANDOM % ''${#ADJECTIVES[@]}))
52 NOUN_INDEX=$((RANDOM % ''${#NOUNS[@]}))
53 # Output the generated name
54 echo "''${ADJECTIVES[$ADJ_INDEX]}''${SEPARATOR}''${NOUNS[$NOUN_INDEX]}"
55 '';
56 }).overrideAttrs
57 { passthru.usage = builtins.readFile ./usage.kdl; };
58 };
59}