fix(v3/webview2): remove the native WebView2 loader and its embeds - #6031
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Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. WalkthroughThe PR enables the standard Windows WebView2 implementation for all Windows builds. It removes the native loader, embedded DLLs, and ChangesWebView2 loader transition
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The PR removes the obsolete native WebView2 loader path and dependency to restore vendoring while preserving default and tagged build compatibility; no actionable merge-blocking risk remains beyond normal checks and review. Poem
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Full details: Description checkExplanation The description covers the change, motivation, linked issues, compatibility impact, testing, environment, and checklist status. It also explains the pending Windows runtime smoke test and why no documentation or unit-test changes were added. Full details: Linked Issues checkExplanation The changes address both linked issues [ Full details: Docstring CoverageExplanation No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 6 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches🧪 Generate unit tests (beta)
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Pull request overview
Removes the legacy native WebView2Loader DLL embed path (and the associated native_webview2loader build tag split) from the v3 WebView2 loader implementation to fix go mod vendor failures caused by missing embedded DLL files that were never shipped in module zips.
Changes:
- Delete the
native_webview2loaderimplementation and embeddedWebView2Loader.dllreferences; make the Go-based loader the sole Windows path. - Drop the now-unused
github.com/jchv/go-winloaderdependency fromv3/go.mod/v3/go.sum. - Update v3 changelog and adjust v3 CI workflow (adds an npm “before” cutoff env var).
Reviewed changes
Copilot reviewed 14 out of 15 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
v3/internal/webview2/webviewloader/native_module.go |
Removed native in-memory DLL loader implementation (go-winloader-based). |
v3/internal/webview2/webviewloader/native_module_{386,amd64,arm64}.go |
Removed //go:embed declarations that referenced missing WebView2Loader.dll files. |
v3/internal/webview2/webviewloader/{version,find_dll_installed,env_create,env_create_options,env_create_completed}.go |
Simplified build constraints to always use the Go loader on Windows (no native_webview2loader split). |
v3/internal/webview2/pkg/edge/create_env_native.go |
Removed the native-loader-backed environment creation path. |
v3/internal/webview2/pkg/edge/create_env_go.go |
Now the only Windows implementation (build tag simplified). |
v3/go.mod |
Removed github.com/jchv/go-winloader requirement. |
v3/go.sum |
Removed go-winloader sums and a now-unneeded x/sys go.mod sum entry. |
v3/UNRELEASED_CHANGELOG.md |
Added entries describing the vendoring fix and removal of the native loader path. |
.github/workflows/build-and-test-v3.yml |
Added step setting NPM_CONFIG_BEFORE to avoid very new npm packages during template tests. |
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| - name: Configure npm package age cutoff | ||
| shell: bash | ||
| run: | | ||
| # npm ignores the generated .npmrc minimum-release-age setting. Keep | ||
| # CI away from partially published packages and their native bindings. | ||
| wails_npm_before="$(node -e 'console.log(new Date(Date.now() - 7 * 24 * 60 * 60 * 1000).toISOString())')" | ||
| echo "NPM_CONFIG_BEFORE=$wails_npm_before" >> "$GITHUB_ENV" | ||
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Inline comments:
In `@v3/UNRELEASED_CHANGELOG.md`:
- Line 35: Update the changelog entry to state that native WebView2 loader
support was removed and the native_webview2loader build tag is retained only as
an inert compatibility tag with no effect; keep the notes about the pure Go
loader and removed dependency.
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📒 Files selected for processing (14)
.github/workflows/build-and-test-v3.ymlv3/UNRELEASED_CHANGELOG.mdv3/go.modv3/internal/webview2/pkg/edge/create_env_go.gov3/internal/webview2/pkg/edge/create_env_native.gov3/internal/webview2/webviewloader/env_create.gov3/internal/webview2/webviewloader/env_create_completed.gov3/internal/webview2/webviewloader/env_create_options.gov3/internal/webview2/webviewloader/find_dll_installed.gov3/internal/webview2/webviewloader/native_module.gov3/internal/webview2/webviewloader/native_module_386.gov3/internal/webview2/webviewloader/native_module_amd64.gov3/internal/webview2/webviewloader/native_module_arm64.gov3/internal/webview2/webviewloader/version.go
💤 Files with no reviewable changes (6)
- v3/go.mod
- v3/internal/webview2/webviewloader/native_module_arm64.go
- v3/internal/webview2/pkg/edge/create_env_native.go
- v3/internal/webview2/webviewloader/native_module_amd64.go
- v3/internal/webview2/webviewloader/native_module_386.go
- v3/internal/webview2/webviewloader/native_module.go
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native_module_{386,amd64,arm64}.go embedded x86/, x64/ and arm64/
WebView2Loader.dll, but the root .gitignore *.dll rule kept those binaries
out of every commit and therefore out of every published module zip. Because
go mod vendor resolves embed patterns for all build configurations, ignoring
GOOS, GOARCH and build tags, vendoring failed for every consumer on every OS,
not just Windows builds.
The native loader is the old path that loaded Microsoft's bootstrap DLL from
memory via go-winloader. The pure Go loader has superseded it, so rather than
ship the missing binaries, remove the native path entirely: delete
native_module*.go and edge/create_env_native.go, drop the
native_webview2loader build tag from the files that were gated against it,
and drop the now-unused github.com/jchv/go-winloader dependency.
Nothing referenced the embeds outside the tag, so default builds are
unaffected. Passing -tags native_webview2loader still builds; the tag is now
simply inert.
Fixes wailsapp#5782
Fixes wailsapp#5376
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Description
Summary
go mod vendorfails for everyone who vendorswails/v3, on every OS:native_module_{386,amd64,arm64}.goembed threeWebView2Loader.dllfiles, but line 4 of the root.gitignoreis a blanket*.dll, so they were never committed and have never been in a published module zip.Per @leaanthony on this PR, the native loader is the old path for Microsoft's bootstrap DLL and is no longer needed, so this removes it rather than shipping the binaries. That matches the note already sitting in
native_module.go:Deletes
native_module*.goandedge/create_env_native.go, drops thenative_webview2loadertag from the six files gated against it, and drops the now-unusedgithub.com/jchv/go-winloaderdependency. Net −248 lines, no binaries added.It looks Windows-specific but isn't:
go mod vendorresolves//go:embedpatterns for every build configuration, ignoringGOOS,GOARCHand build tags. The error is identical underGOOS=linux, and it leaves a half-writtenvendor/tree, so the next command fails withinconsistent vendoring in ...and hides the cause. A plaingo buildis unaffected, which is why only vendoring users hit it.Worth noting how long this has run:
wails/webview2v1.0.24 through v1.0.28 andwails/v3 v3.0.0-beta.13all ship zero DLLs. #5376 was closed as fixed in May, then re-reported on alpha.98, alpha2.115 (#5782) and now beta.13. The code moved in-tree in between, which changed the import path in the error but not the cause.Compatibility
-tags native_webview2loaderstill builds. The tag is now inert rather than an error, so anyone still passing it in a Taskfile or CI script keeps working, they just get the Go loader.UsingGoWebview2Loaderis left in place and still reported bywails3 doctor. It is now always true. Retiring that field changes doctor output, so I left it for a separate call.native_webview2loaderhandling inv2/pkg/commands/build/build.goand gets the DLLs fromgo-webview2, where they are committed.create_env_go.gokeeps its name now that it is the only implementation. Happy to fold it intocreate_env.goif you would prefer.Fixes #5782
Fixes #5376
Type of change
How Has This Been Tested?
On macOS, cross-compiling to Windows. I have not run an app on Windows or Linux hardware, so only macOS is ticked. This needs a real Windows smoke test before merge — the change is a deletion of a non-default path, but I cannot exercise the runtime.
Vendoring, via a throwaway module with one
pkg/applicationimportreplaced onto this branch:The vendor tree now contains zero
.dllfiles and nojchv/go-winloader.Builds,
./internal/webview2/... ./pkg/application/:gofmt -lclean on every file touched.go vetfor windows shows only the two pre-existingunsafe.Pointerwarnings insyscall.go. The unrelatedbuild_assets/iosand Linux cgo build errors reproduce identically on master with this branch stashed.Test Configuration
Checklist:
website/src/pages/changelog.mdxwith details of this PR (v3 changelog entries are added automatically)No docs change: nothing under
v3documents thenative_webview2loadertag, and this alters no API, option or CLI output. Changelog entries added tov3/UNRELEASED_CHANGELOG.mdunder Fixed and Removed.No new test: the previous revision of this PR added one guarding the DLLs' presence, which is moot now they are gone. The regression this needs is a CI step running
go mod vendor, since nothing in the current suite would have caught any of the four reports. Happy to add that here or separately, whichever you prefer.Summary by CodeRabbit
Bug Fixes
Refactor
native_webview2loaderbuild option remains accepted for compatibility but no longer changes behavior.