ci: add crates.io publish workflow

.github/workflows/publish-crate.yml

@@ -0,0 +1,18 @@
+name: Publish to crates.io
+
+on:
+  workflow_call:
+    inputs:
+      plan:
+        required: true
+        type: string
+
+jobs:
+  publish-crate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo publish --token ${{ secrets.CARGO_REGISTRY_TOKEN }}

.github/workflows/release.yml

@@ -324,15 +324,30 @@ jobs:
           done
           git push
 
+  custom-publish-crate:
+    needs:
+      - plan
+      - host
+    if: ${{ !fromJson(needs.plan.outputs.val).announcement_is_prerelease || fromJson(needs.plan.outputs.val).publish_prereleases }}
+    uses: ./.github/workflows/publish-crate.yml
+    with:
+      plan: ${{ needs.plan.outputs.val }}
+    secrets: inherit
+    # publish jobs get escalated permissions
+    permissions:
+      "id-token": "write"
+      "packages": "write"
+
   announce:
     needs:
       - plan
       - host
       - publish-homebrew-formula
+      - custom-publish-crate
     # use "always() && ..." to allow us to wait for all publish jobs while
     # still allowing individual publish jobs to skip themselves (for prereleases).
     # "host" however must run to completion, no skipping allowed!
-    if: ${{ always() && needs.host.result == 'success' && (needs.publish-homebrew-formula.result == 'skipped' || needs.publish-homebrew-formula.result == 'success') }}
+    if: ${{ always() && needs.host.result == 'success' && (needs.publish-homebrew-formula.result == 'skipped' || needs.publish-homebrew-formula.result == 'success') && (needs.custom-publish-crate.result == 'skipped' || needs.custom-publish-crate.result == 'success') }}
     runs-on: "ubuntu-22.04"
     env:
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Cargo.toml

@@ -29,10 +29,17 @@ predicates = "3"
 inherits = "release"
 lto = "thin"
 
+# Config for 'dist'
 [workspace.metadata.dist]
+# The preferred dist version to use in CI (Cargo.toml SemVer syntax)
 cargo-dist-version = "0.31.0"
-ci = ["github"]
+# CI backends to support
+ci = "github"
+# The installers to generate for each app
 installers = ["homebrew"]
+# A GitHub repo to push Homebrew formulas to
 tap = "hamsurang/homebrew-deepwiki-cli"
-publish-jobs = ["homebrew"]
+# Publish jobs to run in CI
+publish-jobs = ["homebrew", "./publish-crate"]
+# Target platforms to build apps for (Rust target-triple syntax)
 targets = ["aarch64-apple-darwin", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu"]