Add flake.nix, build-flatpak

Author: ranfdev

flake.lock

@@ -0,0 +1,12 @@
+{
+  description = "A gemini browser";
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs";
+  };
+  outputs = { self, nixpkgs }:
+  with import nixpkgs { system = "x86_64-linux"; };
+  {
+    geopard = callPackage ./nix/geopard.nix {};
+    build-flatpak = callPackage ./nix/build-flatpak.nix {};
+  };
+}

flake.nix

@@ -0,0 +1,50 @@
+{flatpak-builder, flatpak, stdenv, jq, dbus, docker, bash, writeShellApplication, writeTextFile}: 
+let 
+f = writeTextFile {
+    name = "build-terminal.sh";
+    text = ''
+    meson dist --include-subprojects --no-tests;
+    '';
+};
+in
+writeShellApplication {
+  name = "build-flatpak";
+  runtimeInputs = [flatpak-builder flatpak jq docker bash];
+  text = ''
+    # Read data from manifest
+    folder=$1
+    manifest=$2;
+    name=$(< "$manifest" jq -r '.["modules"] | last | .["name"]');
+    appid=$(< "$manifest" jq -r '.["app-id"]');
+    runtime=$(< "$manifest" jq -r '"runtime/" + .["runtime"] + "/x86_64/" + .["runtime-version"]');
+
+    # Install flathub repo
+    flatpak --verbose remote-add --system --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo;
+    flatpak install --system -y "$runtime";
+
+    # Prepare build folder
+    if [ -n "$(ls -A "$folder")" ]; then
+      echo error: directory "$folder" is not empty;
+      exit 1;
+    fi
+    rm -rf "$folder";
+    mkdir "$folder";
+
+    # Generate dist archive and the release manifest
+    flatpak-builder "$folder"/build "$manifest" --build-only --stop-at="$name" --keep-build-dirs --force-clean;
+    < ${f} flatpak-builder "$folder"/build "$manifest" --build-shell="$name" --keep-build-dirs --state-dir="$folder"/state;
+    < "$manifest" jq '(.["modules"] | last | .["sources"] | last) |= {type: "archive", path: "archive.tar.xz"}' > build-flatpak-auto/manifest-archive.json;
+
+    # Build the app from the dist archive, using the corrected manifest
+    cd "$folder"/;
+    mv state/build/"$name"/_flatpak_build/meson-dist/*.tar.xz archive.tar.xz;
+    flatpak-builder build --repo repo manifest-archive.json --force-clean;
+    flatpak build-bundle ./repo "$appid".flatpak "$appid"
+    
+    # Put all the artifacts in a single folder
+    mkdir artifacts;
+    mv "$appid".flatpak artifacts/;
+    mv manifest-archive.json artifacts/"$appid".json;
+    mv archive.tar.xz artifacts/"$appid".tar.xz;
+  '';
+}