recutils: additional feature flags

Adds feature flags to the Nix derivation that enable support for
encrypted record fields and the uuid record type within the recutils
executables, and builds Bash builtins for working with recfiles.

pkgs/by-name/re/recutils/package.nix

@@ -4,6 +4,16 @@
 , bc
 , check
 , curl
+
+, withEncryption ? true
+, libgcrypt
+, libgpg-error
+
+, withUuid ? true
+, libuuid
+
+, withBashBuiltins ? true
+, bash
 }:
 
 stdenv.mkDerivation rec {
@@ -17,8 +27,20 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = lib.optional stdenv.cc.isClang "format";
 
+  configureFlags =
+    lib.optionals withBashBuiltins [
+      "--with-bash-headers=${bash.dev}/include/bash"
+    ];
+
   buildInputs = [
     curl
+  ] ++ lib.optionals withEncryption [
+    libgpg-error.dev
+    libgcrypt.dev
+  ] ++ lib.optionals withUuid [
+    libuuid
+  ] ++ lib.optionals withBashBuiltins [
+    bash.dev
   ];
 
   nativeCheckInputs = [