Implement initial shell script template

Author: rszamszur

copier.yml

@@ -11,20 +11,21 @@ _envops:
   variable_end_string: "}}"
   variable_start_string: "{{"
 
+_tasks:
+  - "chmod +x {{script_name}}.sh"
+
 # TEMPLATE QUESTIONS
-project_name:
+script:
   type: str
-  help: >-
-    What's your project name?
-
-    Do not use dots or spaces in the name; just "A-Za-z0-9-_" please.
+  help: What is your new shell script name?
 
-name:
-  type: str
-  help: What is the name to greet for the generator hello world example?
+nix:
+  type: bool
+  help: Do you want to use nix-sell (shebang header)?
+  default: yes
 
 # TEMPLATE NONE-CONFIGURABLE DEFAULTS
-package_name:
+script_name:
   type: str
-  default: "{{ project_name|lower|replace(' ','_')|replace('-','_') }}"
-  when: false
+  default: "{{ script|lower|replace(' ','_')|replace('-','_') }}"
+  when: false

template/{{package_name}}/hello_world.py.jinja

@@ -0,0 +1,18 @@
+{%- if nix -%}
+#! /usr/bin/env nix-shell
+#! nix-shell -p coreutils -i bash
+#! nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/nixos-22.05.tar.gz
+{%- else -%}
+#!/usr/bin/env bash
+{% endif %}
+
+if [ -n "$DEBUG" ]; then
+	set -x
+fi
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+echo "Hello world!"
+