build: move the BFF's Go toolchain to 1.27.1 - #26
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Step 3 of the toolchain review. The pin moves from 1.26.8 to 1.27.1: the toolchain line in go.mod, the golang image in the Dockerfile where there is one, explicit CI versions, and the docs that state the pin. CI's drift check keeps them equal. The go line is unchanged at 1.25.x. That line, not the toolchain, sets GODEBUG defaults, so the defaults Go 1.26 and 1.27 changed (cryptocustomrand, tlssecpmlkem, urlstrictcolons, tracebacklabels, x509sslcertoverrideplatform) keep their previous behaviour until the go line is raised on purpose. Verified on go1.27.1: build, vet, golangci-lint v2.14.0 built with go1.27.1 (0 issues, caps off), and go test -race green. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GKRxaeYxyDhmt42cehLsGA
This was referenced Sep 27, 2026
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Step 3 of the toolchain review: Go 1.26.8 → 1.27.1.
bff/go.mod:toolchain go1.27.1.bff/Dockerfile:golang:1.27.1-alpine.SECURITY.mdstates the new pin.CI reads
bff/go.mod, and #24's drift check fails the build if CI and the Dockerfile disagree.The
go 1.25.0line is unchanged, so GODEBUG defaults stay those of Go 1.25. Defaults that newer Go versions changed aren't adopted by this PR.Verification (local, go1.27.1):
go vet· golangci-lint v2.14.0 built with go1.27.1: 0 issues (thebff-lintjob from #25) ·go test -race ./...green. I couldn't verify locally thatgolang:1.27.1-alpinepulls.Siblings: ovander/go-oauth2#249, ovander/backendkit#53, ovander/oauth2-monitoring#37.
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https://claude.ai/code/session_01GKRxaeYxyDhmt42cehLsGA
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