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fedora/README.md
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Pathfinder 1cd8d26d01 XFCE on SDDM; menu defaults to none for DE and TWM
- XFCE module installs/enables sddm instead of lightdm; one greeter across
  every session choice, no lightdm left anywhere.
- Interactive menus now default to 'none' for both DE and TWM (press Enter
  for no DE / no TWM). none+none is still refused by the existing guard.
- README and session.sh comments updated to match.
2026-10-27 11:06:50 +01:00

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# Fedora Unified Config
Unified configuration for **bare/minimal Fedora 44 and newer**. Pick a desktop
environment and optionally a tiling window manager; the script wires up repos,
packages, the greeter and the session entry.
This repo is the Fedora-only successor to `starburst`. Everything multi-distro
(Arch, Debian, Ubuntu branches, OS guessing, per-distro package helpers) is gone
on purpose.
## Usage
```bash
git clone https://git.ku-it.org/yuri/fedora.git
cd fedora
./setup.sh # interactive: choose DE, then TWM
./setup.sh --debug # same, but pause after each section
```
Non-interactive:
```bash
./setup.sh --yes --de=none --twm=niri
./setup.sh --yes --de=gnome --twm=none
```
Run as your **normal user**, not root. `sudo` is used where needed.
## Layout
```
setup.sh entrypoint: args, preconditions, base setup, menus, dispatch
lib/common.sh colours, logging, dnf helpers, rpmfusion/terra, nerd fonts
lib/session.sh display-manager detection/switching, session entries
modules/de/{gnome,plasma,xfce}.sh
modules/twm/{niri,hyprland,mango,chadwm}.sh
```
Modules are **separate processes**, not sourced into `setup.sh`. That means a
module's own `set -e` cannot leak into the caller, and every module can be run
on its own for testing:
```bash
DE=none TWM=niri DEBUG_MODE=false bash modules/twm/niri.sh
```
Each module pulls in `lib/` by relative path, so it works both ways.
## Selection matrix
| DE | TWM | Result |
|---|---|---|
| any | any | DE provides the session; TWM is added alongside it |
| `none` | any | TWM-only machine, SDDM installed as the greeter |
| any | `none` | plain desktop, no tiling WM |
| `none` | `none` | **refused** — that is not a graphical system |
### Desktop environments
| DE | dnf group (tried in order) | native greeter |
|---|---|---|
| `gnome` | `gnome-desktop`, `gnome-desktop-environment`, `workstation-product-environment` | gdm |
| `plasma` | `kde-desktop`, `kde-desktop-environment` | sddm |
| `xfce` | `xfce-desktop`, `xfce-desktop-environment` | sddm |
### Tiling window managers
| TWM | Source | Session type | Notes |
|---|---|---|---|
| `niri` | Fedora repos + Terra (for `noctalia`) | Wayland | Ships its own session entry |
| `hyprland` | Fedora repos | Wayland | Ships its own session entry |
| `mango` | **Terra repo only** | Wayland | Session entry written if the package lacks one |
| `chadwm` | **built from source** | **X11** | dwm fork; not packaged anywhere for Fedora |
`chadwm` is the only X11 entry in the menu. The other three are Wayland
compositors — do not expect the same config story from it.
## Display manager policy
* A **DE module** leaves the DE's own greeter alone (GNOME→gdm, Plasma→sddm,
XFCE→sddm). It never fights a desktop over its own login screen.
* A **TWM module** enforces **SDDM**, because it is the only greeter that lists
Wayland compositors *and* X11 sessions in one menu.
* Either way `graphical.target` becomes the default.
## Design rules
1. **Fail loudly, early.** `set -e` is on unless `--debug`. Unsupported distro,
release below 44, `DE=none` + `TWM=none`, and a missing module all abort with
an explanation instead of half-installing.
2. **Be idempotent.** Re-running must be safe. Repos are checked with `rpm -q`
before being added, the Nerd Font is skipped if already present, and session
entries are not overwritten.
3. **Prefer official repos, then Terra, then a source build.** That order is why
only `mango` and `chadwm` need special handling.
4. **No silent optional failures.** `install_optional` warns and continues for
nice-to-haves; everything load-bearing uses `install_packages` and aborts.
5. **Guard anything environment-dependent.** `clear` needs `|| true` (no `TERM`
under cron/pipes), `os-release` fields are defaulted, and
`/usr/share/xsessions` is created before writing into it.
## Testing
The script was verified on a non-Fedora host with a stateful stub harness
(fake `sudo`/`dnf`/`rpm`/`systemctl`/`git`/`make`/`curl`, a fake `os-release`,
and sandboxed `/usr` + `$HOME`). Covered: every DE×(TWM|none) combination, the
refusal paths, `--help`/bad args, interactive menus, `--debug` abort, and
re-running for idempotency.
`OS_RELEASE_FILE` is overridable purely so the preconditions can be tested:
```bash
OS_RELEASE_FILE=/tmp/fake-os-release ./setup.sh --yes --de=xfce --twm=chadwm
```
## Known limitations
* `noctalia` and `mangowc` come from **Terra**, a third-party repo. The
package layout there is not guaranteed across Fedora releases; `mango` aborts
with build-from-source instructions if the package is missing.
* Package *names* are not verified by installation in this repo's test harness —
only control flow is. First real run on a fresh F44 box is the actual proof.
* `gnome-tweaks`/`gnome-extensions-app`, `wofi`, `waybar`, `hyprlock` and friends
are installed with `install_optional`, so a rename will warn rather than fail.
## Roadmap
- [ ] Profile files (`--profile=laptop`) instead of individual flags
- [ ] Optional dotfiles layer (noctalia/hyprland/niri configs)
- [ ] `--dry-run` that prints the dnf transaction without applying it
- [ ] Pre-flight report: what is already installed, what would change
## License
See `LICENSE`.