chore(just): justfile refactoring

scripts/cosmic.just

@@ -0,0 +1,28 @@
+rootdir := ''
+prefix := '/usr'
+
+# Installation command
+[private]
+install-cmd options src dest:
+    install {{options}} {{src}} {{dest}}
+
+[private]
+install-bin src dest: (install-cmd '-Dm0755' src dest)
+
+[private]
+install-file src dest: (install-cmd '-Dm0644' src dest)
+
+# Errors if a command does not exist
+[private]
+dep-cmd cmd:
+    @which {{cmd}} >/dev/null || (just print-error 'missing dependency' 'command' {{cmd}}; exit 1)
+
+# Errors if a library does not exist
+[private]
+dep-lib lib:
+    @pkg-config --libs {{lib}} >/dev/null 2>&1 || (just print-error 'missing dependency' 'library' {{lib}}; exit 1)
+
+# Display a formatted error for the user.
+[private]
+print-error msg key value:
+    @echo '\e[0;31mERROR  {{msg}}, \e[1;31m{{key}}: \e[0;31m{{value}}\e[0m'