From 87fa440498bb75d554cfc2773d2f64b59b875910 Mon Sep 17 00:00:00 2001
From: Brian Picciano <me@mediocregopher.com>
Date: Sun, 16 Jun 2024 23:25:23 +0200
Subject: [PATCH] WIP

---
 default.nix                 |  5 +--
 dist/linux/arch/default.nix | 86 +++++++++++++++++++++++++++++++++++++
 release.nix                 | 12 ++++--
 3 files changed, 96 insertions(+), 7 deletions(-)
 create mode 100644 dist/linux/arch/default.nix

diff --git a/default.nix b/default.nix
index c595ae9..80afece 100644
--- a/default.nix
+++ b/default.nix
@@ -157,10 +157,7 @@ in rec {
       unset SOURCE_DATE_EPOCH
 
       appimagetool ./isle.AppDir
-
-      mkdir -p "$out"/bin
-      chmod +w "$out" -R
-      mv Isle-* "$out"/bin/isle
+      mv Isle-* "$out"
     '';
   };
 
diff --git a/dist/linux/arch/default.nix b/dist/linux/arch/default.nix
new file mode 100644
index 0000000..99d41d2
--- /dev/null
+++ b/dist/linux/arch/default.nix
@@ -0,0 +1,86 @@
+{
+  pkgs,
+  buildSystem,
+  releaseName,
+  appImage,
+}: let
+
+  cpuArch = (pkgs.lib.systems.parse.mkSystemFromString buildSystem).cpu.name;
+
+  pkgbuild = pkgs.writeText "isle-arch-PKGBUILD-${releaseName}-${cpuArch}" ''
+    pkgname=isle
+    pkgver=${releaseName}
+    pkgrel=0
+    pkgdesc="The foundation for an autonomous community cloud infrastructure."
+    arch=('${cpuArch}')
+    url="https://code.betamike.com/micropelago/isle"
+    license=('AGPL-3.0-or-later')
+
+    depends=(
+      'fuse2'
+    )
+
+    # The appImage is deliberately kept separate from the src.tar.zst. For some
+    # reason including the appImage within the archive results in a large part
+    # of the binary being stripped away and some weird skeleton appImage comes
+    # out the other end.
+    source=('isle' 'src.tar.zst')
+    md5sums=('SKIP' 'SKIP')
+    noextract=('isle')
+
+    package() {
+      cp -r etc "$pkgdir"/etc
+      cp -r usr "$pkgdir"/usr
+
+      mkdir -p "$pkgdir"/usr/bin/
+      cp isle "$pkgdir"/usr/bin/
+    }
+  '';
+
+in
+  pkgs.stdenv.mkDerivation {
+    name = "isle-arch-pkg-${releaseName}-${cpuArch}";
+
+    nativeBuildInputs = [
+      pkgs.zstd
+      pkgs.pacman
+      pkgs.fakeroot
+      pkgs.libarchive
+    ];
+
+    inherit pkgbuild;
+    src = appImage;
+    appDir = ../../../AppDir;
+    dontUnpack = true;
+
+    buildPhase = ''
+      mkdir -p root/etc/isle/
+      cp "$appDir"/etc/daemon.yml root/etc/isle/daemon.yml
+
+      mkdir -p root/usr/lib/sysusers.d/
+      cat >root/usr/lib/sysusers.d/isle.conf <<EOF
+      u isle - "isle Daemon"
+      EOF
+
+      cp $pkgbuild PKGBUILD
+
+      tar -cf src.tar.zst --zstd --mode=a+rX,u+w -C root .
+      cp "$src" isle
+
+      PKGEXT=".pkg.tar.zst" makepkg \
+        --nodeps \
+        --config ${pkgs.pacman}/etc/makepkg.conf
+    '';
+
+    installPhase = ''
+      mkdir -p $out
+      cp *.pkg.tar.zst $out/
+    '';
+
+    checkPhase = ''
+      namcap *.pkg.tar.zst
+    '';
+
+    # NOTE if https://github.com/NixOS/nixpkgs/issues/241911 is ever addressed
+    # it'd be nice to add an automatic check here.
+  }
diff --git a/release.nix b/release.nix
index 7dd99e2..cb14aa4 100644
--- a/release.nix
+++ b/release.nix
@@ -16,15 +16,21 @@
       inherit buildSystem hostSystem releaseName revision;
     }).appImage;
 
+    archPkg = ((import ./dist/linux/arch) {
+      inherit pkgs buildSystem releaseName appImage;
+    });
+
   in pkgs.stdenv.mkDerivation {
     name = "isle-release-${hostSystem}";
-    inherit releaseName appImage hostSystem;
+    inherit releaseName hostSystem;
+    inherit appImage archPkg;
 
     builder = builtins.toFile "build.sh" ''
       source $stdenv/setup
 
       mkdir -p "$out"/
-      cp "$appImage"/bin/isle "$out"/isle-$releaseName-$hostSystem
+      cp "$appImage" "$out"/isle-$releaseName-$hostSystem.AppImage
+      cp "$archPkg"/*.tar.zst "$out"/isle-$releaseName-$hostSystem.pkg.tar.zst
     '';
   };
 
@@ -43,7 +49,7 @@ in
 
       mkdir -p "$out"
       for p in $releases; do
-        cp "$p"/isle-* "$out"/
+        cp "$p"/* "$out"/
       done
 
       (cd "$out" && sha256sum * > sha256.txt)