feat(nix-compat/narinfo/signature): generalize name field r/8540

Requiring `name` to be a `&str` means it'll get annoying to pass around
`Signature`, but being able to pass them around in an owned fashion is
kinda a requirement for a stronger typed `PathInfo` struct, where we
want to have full ownership.

Rework the `Signature` struct to become generic over the type of the
`name` field. This means, it becomes possible to have owned versions
of it.

We don't want to impose `String` or `SmolStr` for example, but want to
leave it up to the nix-compat user to decide.

Provide a type alias for the existing `&str` variant (`SignatureRef`),
and use it where we previously used the non-generic `Signature` one.

Add some tests to ensure it's possible to *use* `Signature` with both
`String` and `SmolStr` (but only pull in `smol_str` as dev dependency
for the tests).

Also, add some more docstrings, these were a bit sparse.

Change-Id: I3f75691498c6bda9cd072d2d9dac83c4f6c57287
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12253
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>

1 files changed, 8 insertions, 4 deletions

diff --git a/tvix/Cargo.nix b/tvix/Cargo.nix
index 54cbcf20721f..a9990b2e72d9 100644
--- a/tvix/Cargo.nix
+++ b/tvix/Cargo.nix
@@ -7481,6 +7481,10 @@ rec {
             packageId = "serde_json";
           }
           {
+            name = "smol_str";
+            packageId = "smol_str";
+          }
+          {
             name = "tokio-test";
             packageId = "tokio-test";
           }
@@ -9301,7 +9305,7 @@ rec {
           }
           {
             name = "itertools";
-            packageId = "itertools 0.10.5";
+            packageId = "itertools 0.13.0";
             usesDefaultFeatures = false;
             features = [ "use_alloc" ];
           }
@@ -9421,7 +9425,7 @@ rec {
           }
           {
             name = "itertools";
-            packageId = "itertools 0.10.5";
+            packageId = "itertools 0.13.0";
           }
           {
             name = "proc-macro2";
@@ -12491,9 +12495,9 @@ rec {
       };
       "smol_str" = rec {
         crateName = "smol_str";
-        version = "0.2.1";
+        version = "0.2.2";
         edition = "2018";
-        sha256 = "0jca0hyrwnv428q5gxhn2s8jsvrrkyrb0fyla9x37056mmimb176";
+        sha256 = "1bfylqf2vnqaglw58930vpxm2rfzji5gjp15a2c0kh8aj6v8ylyx";
         authors = [
           "Aleksey Kladov <aleksey.kladov@gmail.com>"
         ];