cool nix functions.md

Functions found http://blog.shealevy.com/2018/08/05/understanding-nix's-string-context/

builtins.scopedImport

• documentation - https://github.com/NixOS/nix/commit/c273c15cb13bb86420dda1e5341a4e19517532b5

builtins.importNative:

• needs allow-unsafe-native-code-during-evaluation
• can be used to decrypt secrets
• documentation - https://github.com/NixOS/nix/commit/5cd022d6c099c583c0494bdacd06f4eb32661135

builtins.exec:

• needs allow-unsafe-native-code-during-evaluation
• can be used to decrypt secrets
• documentation - https://github.com/NixOS/nix/commit/967f23198101e88d974636e47f359401ee93489b

builtins.parseDrvName:

• documentation - https://github.com/NixOS/nix/blob/19265ed26c5bd25b299896ed851bda6c444cf1a8/doc/manual/expressions/builtins.xml#L864-L876
• example usage - https://github.com/NixOS/nixpkgs/blob/86dc8678032257123ce26377e6ac8c76ccd64ae8/lib/strings.nix#L383-L388