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**Related issue:** #49149
Adds **Firefox Nightly** and **Firefox Developer Edition** as
Fleet-maintained apps for macOS and Windows (4 new FMAs). Mozilla VPN
(also requested in #49149) is not included, so this doesn't close the
issue.
## What's included
| App | macOS | Windows |
|-----|-------|---------|
| Firefox Nightly | Homebrew cask `firefox@nightly`, bundle ID
`org.mozilla.nightly` | MSIX `Mozilla.Firefox.Nightly.MSIX` (no exe
package exists in winget) |
| Firefox Developer Edition | Homebrew cask `firefox@developer-edition`,
bundle ID `org.mozilla.firefoxdeveloperedition` | NSIS exe
`Mozilla.Firefox.DeveloperEdition`, machine scope, `/S` |
All identity fields were verified against the real installers, not
catalog metadata: bundle IDs read from the DMGs' `Info.plist`, MSIX
identity ("Firefox Nightly" / publisher "Mozilla Corporation") read from
the package's `AppxManifest.xml`, and DevEd's registry identity
(`Firefox Developer Edition (x64 en-US)`, publisher `Mozilla`,
versionless DisplayName) confirmed in Mozilla's NSIS installer source at
the shipped release tags.
The MSIX install/uninstall scripts follow the established Slack/Claude
pattern (provision machine-wide + register for the logged-on user via
scheduled task).
## Pre-release version handling (macOS)
Mozilla's pre-release bundles report only the base version in
`CFBundleShortVersionString` (`153.0` for cask version `153.0b13`),
which would make the generated patch policy flag every up-to-date
install as outdated. Instead, the patch policies for these two channels
compare **`bundle_version`** (`CFBundleVersion` encodes the build date,
e.g. `15326.7.15`), so individual pre-release builds are
distinguishable:
- **Nightly**: derived directly from the build timestamp embedded in the
cask version (`154.0a1,2026-07-17-09-27-13` → `15426.7.17`). No external
calls.
- **Developer Edition**: build date resolved from Mozilla's
[buildhub](https://buildhub.moz.tools) (indexed as product `firefox`,
channel `aurora`). On buildhub failure the ingester logs a warning and
falls back to a base-version comparison (cycle granularity) rather than
failing the run; it self-corrects on the next scheduled ingestion.
The macOS validator gets a matching exception accepting `base + "b"`
versions for the DevEd bundle ID. Both computed values were verified
against the actual DMGs' `Info.plist`.
**Known limitation (Windows):** patch detection for Developer Edition on
Windows is only accurate to the release cycle (153 vs 154), not between
betas (b13 vs b14) — the registry `DisplayVersion` and winget's
`PackageVersion` are both the base version (`151.0`) with no beta
number, and osquery's `programs` table has nothing finer to compare.
Nightly on Windows is day-granular since its MSIX package version
encodes the build date. Documented in #49149.
## Other changes
- Tightened `firefox_uninstall.ps1` (release channel FMA): its
`*Firefox*` match would have uninstalled Developer Edition (or ESR)
first depending on registry enumeration order. Now matches `Mozilla
Firefox*` and excludes ESR; `firefox/windows` output regenerated.
- Channel-specific icons generated from the real app bundles (frontend
components + website PNGs), with map keys covering both catalog and
inventory names.
## Why Firefox Beta is not included
Beta (requested in #49149) was deliberately dropped:
- On Windows, the Beta exe registers the same identity as release
Firefox (`Mozilla Firefox (x64 en-US)`), making it indistinguishable in
inventory. The only distinct package is `Mozilla.Firefox.Beta.MSIX`,
which has no `en-US` winget locale manifest (only `en`), which the
ingester requires.
- On macOS, Beta shares both the bundle ID (`org.mozilla.firefox`) and
the install path (`/Applications/Firefox.app`) with release Firefox, so
installing it silently replaces a release install.
## Notes for reviewers
- Nightly URLs are date-stamped and refresh with the daily FMA
ingestion; within-cycle Nightly darwin builds share a `CFBundleVersion`
date so same-day rebuilds are indistinguishable.
- DevEd's winget package lags Mozilla's releases (winget latest is 151.0
vs current 153.0b13); the FMA tracks winget as usual.
- The `CFBundleVersion` format (`<major><yy>.<M>.<D>`, unpadded) is an
inferred contract of Mozilla's build system, verified against both
shipped DMGs; if it ever changes, patch status fails visibly (reports
unpatched), not silently.
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [x] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements), JS
inline code is prevented especially for url redirects, and untrusted
data interpolated into shell scripts/commands is validated against shell
metacharacters.
- [x] Timeouts are implemented and retries are limited to avoid infinite
loops
## Testing
- [x] Added/updated automated tests
- [ ] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Added deployment support for Mozilla Firefox Developer Edition and
Firefox Nightly on macOS and Windows (including Homebrew/Winget inputs
and platform-specific install/uninstall workflows).
* Added new catalog entries and dedicated UI icons for both Firefox
variants.
* **Bug Fixes**
* Improved macOS “patched” detection and version matching for Developer
Edition and Nightly builds.
* Enhanced Homebrew ingestion by resolving build information (with
fallback when unavailable).
* Refined Windows uninstallation matching to target the correct Firefox
release channels and avoid ESR.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Allen Houchins
0e587dc80c