Add Debian/Fedora dependency install scripts, rename Arch one

Splits install-deps.sh into per-distro scripts (install_deps_arch.sh,
install_deps_debian.sh, install_deps_fedora.sh) since package names and
managers differ; ascii-image-converter is built via go install on
Debian/Fedora since it's AUR-only on Arch.

install_deps_debian.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+sudo apt update
+sudo apt install -y fswebcam v4l-utils python3-opencv golang-go
+
+# ascii-image-converter isn't packaged for apt; build it with go instead
+go install github.com/TheZoraiz/ascii-image-converter@latest
+sudo install -Dm755 "$(go env GOPATH)/bin/ascii-image-converter" /usr/local/bin/ascii-image-converter
+
+# lp group membership grants write access to /dev/lp0 for txt2printr.sh
+if ! groups "$USER" | grep -qw lp; then
+    sudo usermod -aG lp "$USER"
+    echo "Added $USER to the lp group - log out and back in for this to take effect"
+fi
+
+# parport/parport_pc expose the parallel port as /dev/lp0 via the lp driver
+sudo modprobe parport parport_pc lp
+echo -e "parport\nparport_pc\nlp" | sudo tee /etc/modules-load.d/parport.conf > /dev/null

install_deps_fedora.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+sudo dnf install -y fswebcam v4l-utils python3-opencv golang
+
+# ascii-image-converter isn't packaged for dnf; build it with go instead
+go install github.com/TheZoraiz/ascii-image-converter@latest
+sudo install -Dm755 "$(go env GOPATH)/bin/ascii-image-converter" /usr/local/bin/ascii-image-converter
+
+# lp group membership grants write access to /dev/lp0 for txt2printr.sh
+if ! groups "$USER" | grep -qw lp; then
+    sudo usermod -aG lp "$USER"
+    echo "Added $USER to the lp group - log out and back in for this to take effect"
+fi
+
+# parport/parport_pc expose the parallel port as /dev/lp0 via the lp driver
+sudo modprobe parport parport_pc lp
+echo -e "parport\nparport_pc\nlp" | sudo tee /etc/modules-load.d/parport.conf > /dev/null

readme.md

@@ -18,23 +18,26 @@ Both read the same `webcam.conf` / `ascii.conf` / `keybinds.conf` /
 
 ## Requirements
 
-- Arch Linux (or another `pacman`/AUR-based distro) is assumed by
-  `install-deps.sh`
 - `fswebcam`, `ascii-image-converter`, `v4l-utils`
 - `python-opencv` (for `photobooth.py`)
 - A V4L2-compatible webcam
 - Optionally, a parallel-port printer wired up via `parport`/`parport_pc`/`lp`
   kernel modules, for hardcopy prints
 
-Install everything with:
+Install everything with the script for your distro:
 
 ```sh
-./install-deps.sh
+./install_deps_arch.sh    # Arch Linux / other pacman+AUR distros
+./install_deps_debian.sh  # Debian, Ubuntu, and other apt-based distros
+./install_deps_fedora.sh  # Fedora and other dnf-based distros
 ```
 
-This installs [`yay`](https://aur.archlinux.org/packages/yay) if needed,
-installs the required packages, adds your user to the `lp` group (needed to
-write to `/dev/lp0`), and loads the parallel-port kernel modules.
+`install_deps_arch.sh` installs [`yay`](https://aur.archlinux.org/packages/yay)
+if needed and pulls `ascii-image-converter` from the AUR. The Debian/Fedora
+scripts build `ascii-image-converter` with `go install` instead, since it
+isn't packaged for `apt`/`dnf`. All three install the required packages, add
+your user to the `lp` group (needed to write to `/dev/lp0`), and load the
+parallel-port kernel modules.
 
 ## Usage
 
@@ -101,5 +104,5 @@ for a couple of previously-tested printers.
 
 ## Other scripts
 
-- `yay-installer.sh` — installs the `yay` AUR helper (used by `install-deps.sh`)
+- `yay-installer.sh` — installs the `yay` AUR helper (used by `install_deps_arch.sh`)
   script (LUKS2/btrfs/FIDO2), unrelated to the photobooth itself, was origin