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Integrates backup wrapper with switch emulators

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• Adds a new backup script that automates creating and rotating backups
• Updates gaming module to include dynamic configuration imports
• Creates desktop entries for emulators using the backup wrapper
This commit is contained in:
Chris Toph 2025-04-18 14:48:28 -04:00
parent adcd16e3e6
commit d2cec468c3
4 changed files with 158 additions and 6 deletions
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8
home/toph/common/optional/gaming/default.nix
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@ -8,10 +8,6 @@
}:
let
path = lib.custom.relativeToRoot "pkgs/common/citron-emu/package.nix";
citron-emu = pkgs.callPackage path { inherit pkgs; };
monitor = lib.head (lib.filter (m: m.primary) config.monitors);
steam-session =
let
@ -50,10 +46,10 @@ let
'';
in
{
imports = lib.custom.scanPaths ./.;
home.packages = with pkgs; [
citron-emu
prismlauncher
ryubing
steam-session
# modrinth-app
(lutris.override {

76
home/toph/common/optional/gaming/scripts/backup.nix Normal file
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@ -0,0 +1,76 @@
{
pkgs,
...
}:
pkgs.writeScript "backup-wrapper" ''
#!/usr/bin/env fish
## Helpers ##
function backup
# Uses $src, $dest, $max_backups from outer scope
set timestamp (date +%Y%m%d-%H%M%S)
set outfile "$dest/backup-$timestamp.tar.zst"
mkdir -p $dest
echo "→ Creating backup: $outfile"
tar cf - $src |
${pkgs.zstd}/bin/zstd -- -c -T5 -15 -v > $outfile
# Rotate: keep only the newest $max_backups
set files (ls -1t $dest/backup-*.tar.zst)
if test (count $files) -gt $max_backups
for f in $files[(math "$max_backups + 1")..-1]
rm $f
echo " • Removed old backup: $f"
end
end
end
function periodic_backups --argument-names pid
while test -d /proc/$pid
sleep $interval
echo "Interval backup at "(date)
backup
end
end
## Arg parsing ##
if test (count $argv) -lt 5
echo "Usage: $argv[0] <src> <dest> <interval_s> <max_backups> -- <program> [args...]"
exit 1
end
set src $argv[1]
set dest $argv[2]
set interval $argv[3]
set max_backups $argv[4]
# strip leading “--” if present
set rest $argv[5..-1]
if test $rest[1] = "--"
set rest $rest[2..-1]
end
## Workflow ##
echo "BACKUP: Initial backup of '$src' → '$dest'"
backup
echo "BACKUP: Launching your program: $rest"
# fish will expand $rest as command + args
$rest &; set pid $last_pid
echo " → PID is $pid"
echo "BACKUP: Starting periodic backups every $interval seconds…"
periodic_backups $pid &
echo "BACKUP: Waiting for PID $pid to exit…"
wait $pid
echo "BACKUP: Program exited at "(date)"; doing final backup."
backup
exit 0
''

3
home/toph/common/optional/gaming/scripts/default.nix Normal file
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@ -0,0 +1,3 @@
{
# :D
}

77
home/toph/common/optional/gaming/switch.nix Normal file
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@ -0,0 +1,77 @@
# This module just provides a customized .desktop file with gamescope args dynamically created based on the
# host's monitors configuration
{
pkgs,
config,
lib,
...
}:
let
path = lib.custom.relativeToRoot "pkgs/common/citron-emu/package.nix";
citron-emu = pkgs.callPackage path { inherit pkgs; };
backup-wrapper = import ./scripts/backup.nix { inherit pkgs; };
user = config.hostSpec.username;
in
{
home.packages = with pkgs; [
citron-emu
ryubing
];
xdg.desktopEntries = {
Ryujinx = {
name = "Ryubing w/ Backups";
comment = "Ryubing Emulator with Save Backups";
exec = ''fish ${backup-wrapper} /home/${user}/.config/Ryujinx/bis/user/save /pool/Backups/Switch/RyubingSaves 960 20 -- ryujinx''; # Should amount to be ~8 hours of playtime in 30 backups
icon = "Ryujinx";
type = "Application";
terminal = false;
categories = [
"Game"
"Emulator"
];
mimeType = [
"application/x-nx-nca"
"application/x-nx-nro"
"application/x-nx-nso"
"application/x-nx-nsp"
"application/x-nx-xci"
];
prefersNonDefaultGPU = true;
settings = {
StartupWMClass = "Ryujinx";
GenericName = "Nintendo Switch Emulator";
};
};
citron-emu = {
name = "Citron w/ Backups";
comment = "Citron Emulator with Save Backups";
exec = ''fish ${backup-wrapper} /home/${user}/.local/share/citron/nand/user/save /pool/Backups/Switch/CitronSaves 960 20 -- citron-emu''; # Should amount to be ~8 hours of playtime in 30 backups
icon = "applications-games";
type = "Application";
terminal = false;
categories = [
"Game"
"Emulator"
];
mimeType = [
"application/x-nx-nca"
"application/x-nx-nro"
"application/x-nx-nso"
"application/x-nx-nsp"
"application/x-nx-xci"
];
prefersNonDefaultGPU = true;
settings = {
StartupWMClass = "Citron";
GenericName = "Nintendo Switch Emulator";
};
};
};
}