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Initial implementation of msvc-go-wine
A single-binary Go tool for cross compiling with the real MSVC toolchain on Linux via Wine. Behaves as cl/link/lib/rc/midl/mt/dumpbin/msbuild/ nmake/ml/ml64/armasm/armasm64/cmd/findstr depending on the name it's invoked as, plus download/install/env/version management subcommands. - download: fetches the MSVC/WinSDK installer manifest, resolves package selection and dependencies, downloads and verifies payloads, unpacks VSIX/MSI packages, and applies a handful of compatibility patches so VsDevCmd.bat and MSBuild's SDK detection work without a Windows Registry (which doesn't exist under Wine). - install: locates the installed toolchain/SDK versions, normalizes header/library name casing, lays out per-architecture tool symlinks with an env.json config each, and compiles a small native launcher (toolrelay.exe) that lets mt.exe's CMake-compatibility exit code survive Wine's own exit-code truncation. - The wrapper runtime rewrites absolute unix paths in tool arguments into Wine's z:\... form, runs the real .exe under wine, and rewrites the tool's output back to plain unix paths. Verified end-to-end against a real MSVC/WinSDK download: cl, link, mt and the resulting hello.exe all work under Wine, including through the toolrelay.exe relay path and with paths containing non-ASCII characters. Offline unit tests cover the wrapper's path-rewrite/output-filter logic, install-time header lowercasing, and download package-selection/ dependency-resolution.
This commit is contained in:
Cheviiot
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package download
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import (
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"encoding/json"
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"testing"
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)
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// fixtureManifest is a trimmed-down stand-in for a real installer manifest,
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// covering: a workload -> component -> {required, Optional, Recommended}
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// dependency chain, host-arch variants of the same package id, and
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// language variants - enough to exercise BuildIndex/collectDependencyClosure
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// offline, without ever hitting the network.
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const fixtureManifestJSON = `{
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"info": {"productDisplayVersion": "test"},
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"packages": [
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{
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"id": "Microsoft.VisualStudio.Workload.VCTools",
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"type": "Workload",
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"dependencies": {
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"Microsoft.VisualStudio.Component.VC.Tools.x86.x64": "1.0"
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}
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},
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{
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"id": "Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
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"type": "Component",
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"dependencies": {
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"Microsoft.VC.Tools.Core": "1.0",
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"Microsoft.VC.Tools.Optional": {"version": "1.0", "type": "Optional"},
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"Microsoft.VC.Tools.Recommended": {"version": "1.0", "type": "Recommended"}
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}
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},
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{
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"id": "Microsoft.VC.Tools.Core",
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"type": "Msi",
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"machineArch": "x86",
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"payloads": [{"fileName": "core-x86.msi", "url": "https://example.invalid/core-x86.msi", "sha256": "aa", "size": 100}]
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},
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{
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"id": "Microsoft.VC.Tools.Core",
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"type": "Msi",
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"machineArch": "arm64",
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"payloads": [{"fileName": "core-arm64.msi", "url": "https://example.invalid/core-arm64.msi", "sha256": "bb", "size": 200}]
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},
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{
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"id": "Microsoft.VC.Tools.Optional",
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"type": "Msi",
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"payloads": [{"fileName": "optional.msi", "url": "https://example.invalid/optional.msi", "size": 10}]
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},
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{
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"id": "Microsoft.VC.Tools.Recommended",
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"type": "Msi",
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"payloads": [{"fileName": "recommended.msi", "url": "https://example.invalid/recommended.msi", "size": 20}]
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},
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{
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"id": "Microsoft.VisualStudio.Resources",
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"type": "Msi",
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"language": "en-US",
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"payloads": [{"fileName": "res-en.msi", "url": "https://example.invalid/res-en.msi", "size": 1}]
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},
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{
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"id": "Microsoft.VisualStudio.Resources",
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"type": "Msi",
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"language": "de-DE",
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"payloads": [{"fileName": "res-de.msi", "url": "https://example.invalid/res-de.msi", "size": 1}]
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}
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]
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}`
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func fixtureIndex(t *testing.T, hostArch string) Index {
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t.Helper()
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var m Manifest
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if err := json.Unmarshal([]byte(fixtureManifestJSON), &m); err != nil {
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t.Fatalf("parsing fixture manifest: %v", err)
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}
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return BuildIndex(&m, hostArch, "en")
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}
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func TestBuildIndexPrioritizesHostArch(t *testing.T) {
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idx := fixtureIndex(t, "x86")
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p := idx.Find("Microsoft.VC.Tools.Core", nil)
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if p == nil {
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t.Fatal("expected to find Microsoft.VC.Tools.Core")
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}
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if p.MachineArch != "x86" {
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t.Errorf("expected x86 variant to sort first for host x86, got machineArch=%q", p.MachineArch)
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}
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idx64 := fixtureIndex(t, "arm64")
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p64 := idx64.Find("Microsoft.VC.Tools.Core", nil)
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if p64.MachineArch != "arm64" {
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t.Errorf("expected arm64 variant to sort first for host arm64, got machineArch=%q", p64.MachineArch)
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}
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}
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func TestBuildIndexPrioritizesLanguage(t *testing.T) {
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idx := fixtureIndex(t, "x86")
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p := idx.Find("Microsoft.VisualStudio.Resources", nil)
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if p == nil {
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t.Fatal("expected to find Microsoft.VisualStudio.Resources")
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}
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if p.Language != "en-US" {
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t.Errorf("expected en-US variant to sort first for language=en, got %q", p.Language)
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}
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}
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func TestAggregateDependsDefaultExcludesOptionalOnly(t *testing.T) {
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// Optional deps are skipped unless --include-optional is passed, but
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// Recommended deps are pulled in unless --skip-recommended is passed -
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// it's "recommended", not "extra".
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idx := fixtureIndex(t, "x86")
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opts := &Options{
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Package: []string{"Microsoft.VisualStudio.Workload.VCTools"},
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HostArch: "x86",
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OnlyHost: true,
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}
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selected, err := ExpandSelection(idx, opts)
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if err != nil {
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t.Fatal(err)
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}
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ids := idsOf(selected)
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mustContain(t, ids, "Microsoft.VisualStudio.Workload.VCTools")
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mustContain(t, ids, "Microsoft.VisualStudio.Component.VC.Tools.x86.x64")
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mustContain(t, ids, "Microsoft.VC.Tools.Core")
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mustContain(t, ids, "Microsoft.VC.Tools.Recommended")
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mustNotContain(t, ids, "Microsoft.VC.Tools.Optional")
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}
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func TestAggregateDependsIncludeOptional(t *testing.T) {
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idx := fixtureIndex(t, "x86")
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opts := &Options{
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Package: []string{"Microsoft.VisualStudio.Workload.VCTools"},
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HostArch: "x86",
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OnlyHost: true,
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IncludeOptional: true,
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}
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selected, err := ExpandSelection(idx, opts)
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if err != nil {
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t.Fatal(err)
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}
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ids := idsOf(selected)
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mustContain(t, ids, "Microsoft.VC.Tools.Optional")
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// Recommended is included by default (only --skip-recommended excludes it).
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mustContain(t, ids, "Microsoft.VC.Tools.Recommended")
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}
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func TestAggregateDependsSkipRecommended(t *testing.T) {
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idx := fixtureIndex(t, "x86")
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opts := &Options{
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Package: []string{"Microsoft.VisualStudio.Workload.VCTools"},
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HostArch: "x86",
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OnlyHost: true,
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SkipRecommended: true,
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}
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selected, err := ExpandSelection(idx, opts)
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if err != nil {
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t.Fatal(err)
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}
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ids := idsOf(selected)
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mustNotContain(t, ids, "Microsoft.VC.Tools.Recommended")
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}
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func TestAggregateDependsRespectsIgnore(t *testing.T) {
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idx := fixtureIndex(t, "x86")
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opts := &Options{
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Package: []string{"Microsoft.VisualStudio.Workload.VCTools"},
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Ignore: []string{"microsoft.vc.tools.core"},
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HostArch: "x86",
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OnlyHost: true,
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}
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selected, err := ExpandSelection(idx, opts)
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if err != nil {
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t.Fatal(err)
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}
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ids := idsOf(selected)
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mustNotContain(t, ids, "Microsoft.VC.Tools.Core")
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mustContain(t, ids, "Microsoft.VisualStudio.Component.VC.Tools.x86.x64")
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}
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func TestAggregateDependsHostArchMismatchExcludes(t *testing.T) {
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idx := fixtureIndex(t, "x86")
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opts := &Options{
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Package: []string{"Microsoft.VC.Tools.Core"},
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HostArch: "arm", // no arm variant exists, only x86/arm64
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OnlyHost: true,
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}
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selected, err := ExpandSelection(idx, opts)
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if err != nil {
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t.Fatal(err)
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}
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if len(selected) != 0 {
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t.Errorf("expected no packages selected for mismatched host arch, got %v", idsOf(selected))
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}
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}
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func idsOf(pkgs []*Package) []string {
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var ids []string
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for _, p := range pkgs {
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ids = append(ids, p.ID)
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}
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return ids
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}
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func mustContain(t *testing.T, ids []string, want string) {
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t.Helper()
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for _, id := range ids {
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if id == want {
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return
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}
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}
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t.Errorf("expected %v to contain %q", ids, want)
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}
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func mustNotContain(t *testing.T, ids []string, unwanted string) {
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t.Helper()
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for _, id := range ids {
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if id == unwanted {
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t.Errorf("expected %v to NOT contain %q", ids, unwanted)
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}
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}
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}
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