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all: upgrade to Go 1.26rc2 and modernize codebase

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This commit upgrades the codebase from Go 1.25.5 to Go 1.26rc2 and
adopts new language features.

Toolchain updates:
- go.mod: go 1.25.5 → go 1.26rc2
- flake.nix: buildGo125Module → buildGo126Module, go_1_25 → go_1_26
- flake.nix: build golangci-lint from source with Go 1.26
- Dockerfile.integration: golang:1.25-trixie → golang:1.26rc2-trixie
- Dockerfile.tailscale-HEAD: golang:1.25-alpine → golang:1.26rc2-alpine
- Dockerfile.derper: golang:alpine → golang:1.26rc2-alpine
- .goreleaser.yml: go mod tidy -compat=1.25 → -compat=1.26
- cmd/hi/run.go: fallback Go version 1.25 → 1.26rc2
- .pre-commit-config.yaml: simplify golangci-lint hook entry

Code modernization using Go 1.26 features:
- Replace tsaddr.SortPrefixes with slices.SortFunc + netip.Prefix.Compare
- Replace ptr.To(x) with new(x) syntax
- Replace errors.As with errors.AsType[T]

Lint rule updates:
- Add forbidigo rules to prevent regression to old patterns
This commit is contained in:
Kristoffer Dalby 2026-02-06 21:39:35 +00:00
parent 20dff82f95
commit 0f6d312ada
50 changed files with 508 additions and 521 deletions
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17
integration/acl_test.go
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@ -20,7 +20,6 @@ import (
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"tailscale.com/tailcfg"
"tailscale.com/types/ptr"
)
var veryLargeDestination = []policyv2.AliasWithPorts{
@ -1284,9 +1283,9 @@ func TestACLAutogroupMember(t *testing.T) {
ACLs: []policyv2.ACL{
{
Action: "accept",
Sources: []policyv2.Alias{ptr.To(policyv2.AutoGroupMember)},
Sources: []policyv2.Alias{new(policyv2.AutoGroupMember)},
Destinations: []policyv2.AliasWithPorts{
aliasWithPorts(ptr.To(policyv2.AutoGroupMember), tailcfg.PortRangeAny),
aliasWithPorts(new(policyv2.AutoGroupMember), tailcfg.PortRangeAny),
},
},
},
@ -1372,9 +1371,9 @@ func TestACLAutogroupTagged(t *testing.T) {
ACLs: []policyv2.ACL{
{
Action: "accept",
Sources: []policyv2.Alias{ptr.To(policyv2.AutoGroupTagged)},
Sources: []policyv2.Alias{new(policyv2.AutoGroupTagged)},
Destinations: []policyv2.AliasWithPorts{
aliasWithPorts(ptr.To(policyv2.AutoGroupTagged), tailcfg.PortRangeAny),
aliasWithPorts(new(policyv2.AutoGroupTagged), tailcfg.PortRangeAny),
},
},
},
@ -1657,9 +1656,9 @@ func TestACLAutogroupSelf(t *testing.T) {
ACLs: []policyv2.ACL{
{
Action: "accept",
Sources: []policyv2.Alias{ptr.To(policyv2.AutoGroupMember)},
Sources: []policyv2.Alias{new(policyv2.AutoGroupMember)},
Destinations: []policyv2.AliasWithPorts{
aliasWithPorts(ptr.To(policyv2.AutoGroupSelf), tailcfg.PortRangeAny),
aliasWithPorts(new(policyv2.AutoGroupSelf), tailcfg.PortRangeAny),
},
},
{
@ -1957,9 +1956,9 @@ func TestACLPolicyPropagationOverTime(t *testing.T) {
ACLs: []policyv2.ACL{
{
Action: "accept",
Sources: []policyv2.Alias{ptr.To(policyv2.AutoGroupMember)},
Sources: []policyv2.Alias{new(policyv2.AutoGroupMember)},
Destinations: []policyv2.AliasWithPorts{
aliasWithPorts(ptr.To(policyv2.AutoGroupSelf), tailcfg.PortRangeAny),
aliasWithPorts(new(policyv2.AutoGroupSelf), tailcfg.PortRangeAny),
},
},
},