Add build-and-upload command (#278)

This does what it says on the tin. The upload location can be configured
in `build.toml`:

```
[general.hub]
repo-id = "kernels-community/relu-upload-test"
branch = "upload-test"
```

If `repo_id` is absent, then `kernels-commumity/<kernel-name>` is used.
If `branch` is absent, then `main` is used.

Fixes #204.

Author: danieldk

build2cmake/src/config/v2.rs

@@ -51,6 +51,15 @@ pub struct General {
     pub cuda_maxver: Option<Version>,
 
     pub cuda_minver: Option<Version>,
+
+    pub hub: Option<Hub>,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields, rename_all = "kebab-case")]
+pub struct Hub {
+    pub repo_id: Option<String>,
+    pub branch: Option<String>,
 }
 
 #[derive(Debug, Deserialize, Clone, Serialize)]
@@ -249,6 +258,7 @@ impl General {
             universal,
             cuda_maxver: None,
             cuda_minver: None,
+            hub: None,
         }
     }
 }

lib/gen-flake-outputs.nix

@@ -158,6 +158,22 @@ in
         chmod -R +w build
       '';
 
+      build-and-upload =
+        let
+          buildToml = build.readBuildConfig path;
+          repo_id = lib.attrByPath [
+            "general"
+            "hub"
+            "repo-id"
+          ] "kernels-community/${buildToml.general.name}" buildToml;
+          branch = lib.attrByPath [ "general" "hub" "branch" ] "main" buildToml;
+        in
+        writeScriptBin "build-and-upload" ''
+          #!/usr/bin/env bash
+          set -euo pipefail
+          ${bestBuildSet.pkgs.python3.pkgs.kernels}/bin/kernels upload --repo-id ${repo_id} --branch ${branch} ${bundle}
+        '';
+
       ci =
         let
           setsWithFramework =

overlay.nix

@@ -18,6 +18,17 @@ final: prev: {
     (
       python-self: python-super: with python-self; {
         kernel-abi-check = callPackage ./pkgs/python-modules/kernel-abi-check { };
+
+        kernels = python-super.kernels.overrideAttrs (oldAttrs: {
+          version = "unstable";
+
+          src = final.fetchFromGitHub {
+            owner = "huggingface";
+            repo = "kernels";
+            rev = "5d21b86a5d611100c10c10b79ffa7965edf567fd";
+            sha256 = "sha256-lKQUVbjhpeXKj1SeZRxgPSsOtBUZ7zQeO6pRoA1h+W8=";
+          };
+        });
       }
     )
   ];