Add some nix-mode templates

templates

@@ -203,6 +203,42 @@ python-base-mode
 (logg "logger = logging.getLogger(__name__)")
 (nimp "raise NotImplementedError")
 
+nix-mode
+
+(pkgs "pkgs = import " (p "<nixpkgs>") " {};")
+(poetry2nix "poetry2nix = (builtins.getFlake \"github:nix-community/poetry2nix\").lib.mkPoetry2Nix {inherit pkgs;};")
+(pythonshell "let" n
+             > "pkgs = import " (p "<nixpkgs>") " {};" n
+             > "in pkgs.mkShellNoCC {" n
+             > "packages = with pkgs; [" n
+             > "poetry" n
+             > (p "python3") n
+             > q n
+             > "];" n
+             > "shellHook = ''" n
+             > "export LD_LIBRARY_PATH=${pkgs.stdenv.cc.cc.lib}/lib:${pkgs.zlib}/lib" n
+             > "'';" n
+             > "}")
+(poetryshell "# See https://github.com/nix-community/poetry2nix/blob/master/docs/edgecases.md#cases" n
+             "# for edgecases like setuptools not found" n
+             "let" n
+             > "pkgs = import " (p "<nixpkgs>") " {};" n
+             > "poetry2nix = (builtins.getFlake \"github:nix-community/poetry2nix\").lib.mkPoetry2Nix {inherit pkgs;};" n
+             > "poetryEnv = let " n
+             > "projectDir = " (p "./.") ";" n
+             > "in (poetry2nix.mkPoetryEnv {" n
+             > "inherit projectDir;" n
+             > "overrides = poetry2nix.defaultPoetryOverrides;" n
+             > "python = " (p "pkgs.python3") ";" n
+             > "editablePackageSources = {" (p "package") "= projectDir;};" n
+             > "extraPackages = (ps: [" q  "]);" n
+             > "preferWheels = true;" n
+             > "groups = [\"dev\"];" n
+             > "extras = [\"*\"];" n
+             > "});" n
+             "in" n
+             > "poetryEnv.env")
+
 envrc-file-mode
 
 (python "CC=\"$(nix build nixpkgs#stdenv.cc.cc.lib --print-out-paths --no-link)\"" n