fix(libstore/filetransfer): restart source before upload retries#15047
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edolstra
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Jan 22, 2026
edolstra
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Jan 22, 2026
When an upload fails with a transient HTTP error (e.g., S3 rate limiting with HTTP 503), retries would fail with "curl error: Failed to open/read local data from file/application" because the upload source was already exhausted from the previous attempt. Restart the source in init() to ensure it's at the beginning for both first attempts (no-op) and retries (necessary fix). Fixes: NixOS#15023
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philiptaron
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## Bug fixes - Fix destruction of DerivationBuilder implementations (NixOS/nix#15072) - Don't report cancelled goals as failures (NixOS/nix#14972) - Fix `linux` build on fresh `glibc` and `gcc` (NixOS/nix#15011) ## S3 binary cache improvements - Add AWS SSO support for S3 authentication (NixOS/nix#14645) - Respect `AWS_PROFILE` environment variable (NixOS/nix#14645) - Add STS support for default profile (NixOS/nix#14645) - Skip `Accept-Encoding` header for S3 SigV4 requests (NixOS/nix#15048) - Restart source before upload retries (NixOS/nix#15047) - Route AWS CRT logs through Nix logger (NixOS/nix#15059) The glibc 2.42 build fix patch is dropped as it is now included upstream. https://github.com/NixOS/nix/releases/tag/2.33.2
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fix(libstore/filetransfer): restart source before upload retries
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Motivation
When an upload fails with a transient HTTP error (e.g., S3 rate limiting
with HTTP 503), retries would fail with "curl error: Failed to open/read
local data from file/application" because the upload source was already
exhausted from the previous attempt.
Restart the source in init() to ensure it's at the beginning for both
first attempts (no-op) and retries (necessary fix).
Context
Fixes: #15023
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