hardened Fedora KDE; primary on Forgejo
01a37a98d4
Five-fix bundle from 7-agent research wave on the v0.5.28-final
gen_grub_cfgstub failure.
## 1. Narrow the anaconda transaction_progress patch (CRITICAL)
The v0.5.28 patch was too broad. It rewrote
`process_transaction_progress` so every 'error' token in the
transaction queue became a `log.warning`. That queue carries four
distinct error classes:
- cpio_error — payload extraction (genuinely fatal)
- script_error — RPM 6.0 cmdline-mode scriptlet warning-as-error
(the ONE we want to ignore)
- unpack_error — payload corruption (genuinely fatal)
- error — generic transaction error (genuinely fatal)
By swallowing all four we silently masked grub2-efi-x64's posttrans
failure mid-install. /boot/efi/EFI/fedora/ ended up incomplete →
gen_grub_cfgstub then failed at the bootloader install phase with
"gen_grub_cfgstub script failed" because its `set -eu` script
couldn't read the missing files.
v0.5.29 narrows the patch: override only the `script_error` callback
inside transaction_progress.py to log a warning and NOT enqueue
'error'. The consumer (`process_transaction_progress`) reverts to
upstream behaviour where cpio_error / unpack_error / error still
raise PayloadInstallationError. Real install-fatal events keep
aborting; only the F43-RPM-6.0 scriptlet regression is silenced.
The patch is applied via `python3 -c` regex rewrite (more robust
than nested sed across multi-line method bodies).
## 2. LUKS UX — `tries=5,timeout=0` (FIX)
Default cryptsetup-generator unit allows ONE passphrase try with a
1m30s wait. One typo on a long passphrase = wait 1m30s, then the
device-wait timer trips, then dracut emergency shell after 3min total.
Brutal. Adding `rd.luks.options=luks-XXX=tries=5,timeout=0` gives
five typo-friendly retries with no auto-timeout.
## 3. fbcon=nodefer on installed-system cmdline (FIX)
Live ISO cmdline already has `fbcon=nodefer` (added in v0.5.27 to fix
the real-laptop black-screen-after-dracut). The installed-system
bootloader directive in the generated install ks did NOT carry it.
Same KMS handoff happens on the installed system on the same hardware.
Now both have the flag.
## 4. /etc/crypttab fallback assertion (BELT-BRACES)
Anaconda's custom-partitioning code path normally writes /etc/crypttab
for `--encrypted` part directives. Edge cases observed in F43+ where
it doesn't. Without crypttab, systemd-cryptsetup-generator can still
work from kernel cmdline alone, but cleanup paths and second-stage
unlock both fall over. Adding a fallback `echo` that writes the
canonical line if it's missing post-anaconda.
## 5. Initramfs LUKS module assertion (DEFENSIVE)
Force-include `crypt + systemd-cryptsetup + plymouth` modules in
initramfs via /etc/dracut.conf.d/10-veilor-luks.conf. dracut autodetects
these when it sees an active LUKS mapping, but %post runs before the
LUKS state is fully observable from the chroot. Plus we wipe stale
initramfs (`rm -f /boot/initramfs-*.img`) before `--regenerate-all`
so the regen actually rewrites bytes. Final assertion runs
`lsinitrd | grep -q cryptsetup` and surfaces a [ERR] line in build
output if the module didn't make it.
## What this should fix
After the man-db fix in v0.5.28-final, install proceeded past
"Configuring xxx" cleanly but died at "Installing boot loader" with
gen_grub_cfgstub. Root-cause was the over-broad patch from #1 above.
After v0.5.29:
- Install transaction completes (man-db excluded; non-man-db
scriptlet warnings still suppressed; real errors still raise)
- gen_grub_cfgstub runs against complete /boot/efi/EFI/fedora/
- Bootloader install completes
- Reboot to disk lands at GRUB veilor-os entry
- Kernel + initramfs load (cryptsetup confirmed present)
- Plymouth LUKS prompt appears with text fallback
- User has 5 tries, no timeout
- Unlock → btrfs subvol mount → systemd → SDDM
Files: kickstart/veilor-os.ks (+45 lines), overlay/usr/local/bin/veilor-installer (+50 lines).
Verified: bash -n clean, ksvalidator clean.
References:
pyanaconda transaction_progress.py:110-136 (4 producers of 'error')
pyanaconda bootloader/efi.py:194-201 (gen_grub_cfgstub call site)
/usr/bin/gen_grub_cfgstub (set -eu wrapper for grub2-mkconfig stub)
Fedora wiki Changes/RPM-6.0
dnf5 issue #2507 (RPM 6.0 scriptlet propagation regression)
|
||
|---|---|---|
| .github | ||
| assets | ||
| build | ||
| docs | ||
| kickstart | ||
| overlay | ||
| scripts | ||
| test | ||
| upstream | ||
| .gitignore | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| README.md | ||
veilor-os
Hardened minimal Fedora KDE spin. Black-on-black. Locked down by default.
veilor-os is a Fedora 43 KDE Plasma remix for operators who want a clean, fast, opinionated desktop with serious hardening already wired in. Boot the ISO, set an admin password, work. No installer wizard. No initial-setup screen. No telemetry. No "would you like to enable X" prompts.
Status
Pre-release v0.2.5 — first feature-complete ISO that actually applies
the veilor-os overlay to the installed system. The build pipeline is green
on CI; the live ISO boots to KDE on KVM and bare metal. See
CHANGELOG.md for the full v0.2.0 → v0.2.5 story (it is
worth reading — five real bugs caught and documented).
What is done: hardening (SELinux, sysctl, USBGuard, fail2ban, firewalld), KDE black theme, Fira Code system font, 3-mode power management, single-prompt LUKS install, first-boot admin password flow, reproducible CI build, EFI+BIOS bootable live ISO.
What is planned (see docs/ROADMAP.md): Plymouth black theme, SDDM theme, signed ISOs (own MOK + GPG), AppArmor + nftables, veilor-update / veilor-doctor helpers, public docs site.
Quick install
# 1. Download the ISO (after public release; CI artifact for now)
sha256sum -c veilor-os-43-*.iso.sha256
# 2. Flash to USB. Replace /dev/sdX with your USB device — triple-check.
sudo dd if=veilor-os-43-*.iso of=/dev/sdX bs=4M status=progress conv=fsync
sync
# 3. Boot from USB, pick "Install veilor-os" from the menu.
# 4. Set a strong LUKS passphrase — the only prompt during install.
# 5. Reboot, remove USB.
# 6. On first boot: TTY prompts for an admin password (≥14 chars, mixed case,
# digit, symbol). Once accepted, SDDM starts. Log in as `admin`.
Full install + first-boot walkthrough: docs/INSTALL.md.
What veilor-os ships
| Layer | Hardening |
|---|---|
| Boot | Secure Boot, lockdown=integrity, slab_nomerge, randomize_kstack_offset=on, vsyscall=none. LUKS2 (aes-xts-plain64, argon2id, mem=1GB). zram swap (no disk swap, no cold-boot leak). |
| Kernel | Locked sysctls: ptrace=2, kptr_restrict=2, dmesg_restrict=1, perf_event_paranoid=3, BPF JIT hardening, full ASLR, no SUID core dumps. |
| MAC | SELinux enforcing, targeted policy + custom veilor-systemd module. |
| Network | firewalld zone = drop, ssh only inbound. systemd-resolved with DNS-over-TLS (Cloudflare/Quad9 fallback), LLMNR off. NTS-authenticated chrony time. |
| SSH | password auth off, root login off, single admin user, X11 forwarding off, MaxAuthTries 3. |
| Auth | root locked, single admin user with sudo. pwquality minlen=14, 4 character classes. First-boot password forced via chage -d 0. |
| Audit | auditd rules covering passwd/shadow/sudoers/ssh/cron/sysctl/kernel modules and all privileged binaries. |
| IDS | fail2ban with sshd + pam-generic jails, journal backend, firewalld rich-rule action. |
| USB | USBGuard daemon, default-block, empty allowlist on first boot. |
| Services off | abrt*, cups, geoclue, avahi-daemon, bluetooth, ModemManager, gssproxy, atd, pcscd, kdeconnectd, PackageKit. |
| UX | KDE Plasma minimal, BreezeBlackPure colour scheme, Fira Code system font, veilor-power save | mid | perf with udev AC/battery auto-switch. |
Full reference: docs/HARDENING.md.
60-second tour — what's different from stock Fedora KDE
- No Anaconda Initial Setup wizard after first boot. Single LUKS passphrase prompt is the entire install interaction. Admin user is pre-created; password is set once on TTY1, then SDDM starts.
- Root is locked.
passwd -S rootreportsL. There is nosu -to root, ever. Usesudo. - No PackageKit, no Flatpak by default. Updates happen with
sudo dnf upgradeon your terms, not in the background. - Default firewall zone is
drop, notFedoraWorkstation. The only thing your machine answers is sshd on its assigned port. - USBGuard blocks every USB device by default. First-boot procedure:
plug in everything you trust, run
usbguard generate-policy, done. - Black-on-black KDE. Wallpaper, panel, Konsole all match. No "white flash" anywhere in the session.
veilor-power save | mid | perfswaps the full tuned profile, CPU governor, EPP, battery threshold, and screen-dim policy in one command. Wired to AC/battery udev events too — laptop drops tosavewhen unplugged automatically.
How veilor-os compares
| Feature | veilor-os | Stock Fedora KDE | Kicksecure |
|---|---|---|---|
| SELinux enforcing OOTB | yes | yes | yes |
| AppArmor | planned (v0.5) | no | yes |
| Secure Boot | yes (Fedora keys) | yes (Fedora keys) | configurable |
| LUKS2 with argon2id | default | optional | default |
| Single-prompt install (LUKS only) | yes | no | no |
| Root account locked by default | yes | no | yes |
| firewalld default zone = drop | yes | no | n/a (uses nftables) |
| USBGuard default-block | yes | no | yes |
| fail2ban + auditd OOTB | yes | no | partial |
| DNS-over-TLS by default | yes | no | yes |
| NTS-authenticated NTP | yes | no | yes |
init_on_alloc/free (post-install) |
yes (planned re-enable) | no | yes |
| Telemetry / phone-home | none | minimal | none |
| KDE Plasma branded theme | yes (black) | Breeze | n/a (XFCE) |
| Power-profile CLI | yes (3-mode) | partial | no |
| Reproducible kickstart-built ISO | yes | yes | yes (from Debian) |
| Base distro | Fedora 43 | Fedora 43 | Debian |
veilor-os is not trying to compete with Whonix-style anonymity or Qubes-style isolation. It is a hardened daily-driver desktop — fast, clean, locked down, with no manual post-install hardening required.
Repo layout
kickstart/ veilor-os.ks full kickstart definition
build/ Containerfile + build-iso.sh reproducible ISO builder
overlay/ files dropped into installed root via %post
scripts/ hardening, SELinux policy, theme apply, firstboot
assets/ fonts, KDE colour scheme, branding, plymouth (planned)
docs/ BUILD / INSTALL / HARDENING / POWER / ROADMAP
test/ boot-checklist + KVM runner
.github/ CI workflows + PR template + CODEOWNERS
Build instructions: docs/BUILD.md. Roadmap: docs/ROADMAP.md. Contributing: CONTRIBUTING.md. Changelog: CHANGELOG.md.
License
MIT — see LICENSE. Fira Code ships from Fedora's
fira-code-fonts package under SIL OFL 1.1. Fedora packages remain
under their respective licences. Kickstart, overlay, scripts, and
docs in this repo are MIT.