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Code Issues Packages Projects Releases Wiki Activity

Fetch uv from Astral's mirror by default (#809)

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This PR tries fetching the uv artifact from `releases.astral.sh` by
default, only in cases where the artifact would otherwise have come from
`https://github.com/astral-sh/uv/releases/download/`. The checksums are
supposed to be the same for the mirror, and can still come from
`raw.githubusercontent.com/astral-sh/versions`. If the download fails,
we fall back to the original URL.

This avoids hitting GitHub's Releases API which is prone to rate
limiting. As far as I can tell, together with
https://github.com/astral-sh/setup-uv/pull/802 this PR makes a github
token entirely unnecessary for this action.


Towards https://github.com/astral-sh/uv/issues/18503.
This commit is contained in:
Zsolt Dollenstein
2026-03-16 12:38:17 +00:00
committed by GitHub
parent 9f00d186ce
commit 37802adc94
4 changed files with 228 additions and 20 deletions
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130
__tests__/download/download-version.test.ts
View File

@@ -68,6 +68,7 @@ const {
downloadVersionFromManifest,
downloadVersionFromNdjson,
resolveVersion,
rewriteToMirror,
} = await import("../../src/download/download-version");
describe("download-version", () => {
@@ -198,6 +199,135 @@ describe("download-version", () => {
"0.9.26",
);
});
it("rewrites GitHub Releases URLs to the Astral mirror", async () => {
mockGetArtifactFromNdjson.mockResolvedValue({
archiveFormat: "tar.gz",
sha256: "abc123",
url: "https://github.com/astral-sh/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
});
await downloadVersionFromNdjson(
"unknown-linux-gnu",
"x86_64",
"0.9.26",
undefined,
"token",
);
expect(mockDownloadTool).toHaveBeenCalledWith(
"https://releases.astral.sh/github/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
undefined,
undefined,
);
});
it("does not rewrite non-GitHub URLs", async () => {
mockGetArtifactFromNdjson.mockResolvedValue({
archiveFormat: "tar.gz",
sha256: "abc123",
url: "https://example.com/uv.tar.gz",
});
await downloadVersionFromNdjson(
"unknown-linux-gnu",
"x86_64",
"0.9.26",
undefined,
"token",
);
expect(mockDownloadTool).toHaveBeenCalledWith(
"https://example.com/uv.tar.gz",
undefined,
"token",
);
});
it("falls back to GitHub Releases when the mirror fails", async () => {
mockGetArtifactFromNdjson.mockResolvedValue({
archiveFormat: "tar.gz",
sha256: "abc123",
url: "https://github.com/astral-sh/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
});
mockDownloadTool
.mockRejectedValueOnce(new Error("mirror unavailable"))
.mockResolvedValueOnce("/tmp/downloaded");
await downloadVersionFromNdjson(
"unknown-linux-gnu",
"x86_64",
"0.9.26",
undefined,
"token",
);
expect(mockDownloadTool).toHaveBeenCalledTimes(2);
// Mirror request: no token
expect(mockDownloadTool).toHaveBeenNthCalledWith(
1,
"https://releases.astral.sh/github/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
undefined,
undefined,
);
// GitHub fallback: token restored
expect(mockDownloadTool).toHaveBeenNthCalledWith(
2,
"https://github.com/astral-sh/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
undefined,
"token",
);
expect(mockWarning).toHaveBeenCalledWith(
"Failed to download from mirror, falling back to GitHub Releases: mirror unavailable",
);
});
it("does not fall back for non-GitHub URLs", async () => {
mockGetArtifactFromNdjson.mockResolvedValue({
archiveFormat: "tar.gz",
sha256: "abc123",
url: "https://example.com/uv.tar.gz",
});
mockDownloadTool.mockRejectedValue(new Error("download failed"));
await expect(
downloadVersionFromNdjson(
"unknown-linux-gnu",
"x86_64",
"0.9.26",
undefined,
"token",
),
).rejects.toThrow("download failed");
expect(mockDownloadTool).toHaveBeenCalledTimes(1);
});
});
describe("rewriteToMirror", () => {
it("rewrites a GitHub Releases URL to the Astral mirror", () => {
expect(
rewriteToMirror(
"https://github.com/astral-sh/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
),
).toBe(
"https://releases.astral.sh/github/uv/releases/download/0.9.26/uv-x86_64-unknown-linux-gnu.tar.gz",
);
});
it("returns undefined for non-GitHub URLs", () => {
expect(rewriteToMirror("https://example.com/uv.tar.gz")).toBeUndefined();
});
it("returns undefined for a different GitHub repo", () => {
expect(
rewriteToMirror(
"https://github.com/other/repo/releases/download/v1.0/file.tar.gz",
),
).toBeUndefined();
});
});
describe("downloadVersionFromManifest", () => {