flake

.gradle/buildOutputCleanup/cache.properties

@@ -1,2 +1,2 @@
-#Wed May 27 23:44:22 CEST 2026
-gradle.version=9.4.1
+#Thu May 28 14:41:41 CEST 2026
+gradle.version=9.5.1

README.md

@@ -56,6 +56,9 @@ enabled = true
 [scrollback]
 editor_command = "vi {file}"
 
+[env.override]
+ZELLIJ_SESSION_NAME = ""
+
 [keybindings]
 navigate_left = "ALT+H"
 navigate_down = "ALT+J"

build.gradle

@@ -1,6 +1,8 @@
 plugins {
     id 'application'
     id 'org.openjfx.javafxplugin' version '0.1.0'
+    // id 'org.graalvm.buildtools.native' version '1.1.1'
+    id 'com.gluonhq.gluonfx-gradle-plugin' version '1.0.28'
 }
 
 repositories {

config.example.toml

@@ -16,6 +16,9 @@ enabled = true
 [scrollback]
 editor_command = "vi {file}"
 
+[env.override]
+ZELLIJ_SESSION_NAME = ""
+
 [keybindings]
 navigate_left = "ALT+H"
 navigate_down = "ALT+J"

flake.nix

@@ -0,0 +1,161 @@
+{
+  description = "jprototerm";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    jlibghostty.url = "git+https://gitea.gregorlohaus.com/gregor/jlibghostty.git";
+  };
+
+  outputs = { self, nixpkgs, jlibghostty }:
+    let
+      supportedSystems = [ "x86_64-linux" ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    in {
+      packages = forAllSystems (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+
+          jlib = jlibghostty.packages.${system}.jlibghostty;
+
+          gluonGraalvm = pkgs.stdenvNoCC.mkDerivation {
+            pname = "graalvm-java23-gluon";
+            version = "23+25.1-dev-2409082136";
+
+            src = pkgs.fetchurl {
+              url = "https://github.com/gluonhq/graal/releases/download/gluon-23%2B25.1-dev-2409082136/graalvm-java23-linux-amd64-gluon-23+25.1-dev.tar.gz";
+              hash = "sha256-/NyMutn3pT4ZKL2pkzPdBZghxg0ERK5VJ2bFQF0VBfU=";
+            };
+
+            installPhase = ''
+              runHook preInstall
+
+              mkdir -p "$out"
+              cp -R . "$out/"
+
+              # The GluonFX Gradle plugin expects these two static libraries
+              # directly under linux-amd64, but this tarball keeps them one
+              # level deeper under linux-amd64/glibc.
+              ln -sfn ./glibc/libjvm.a "$out/lib/svm/clibraries/linux-amd64/libjvm.a"
+              ln -sfn ./glibc/liblibchelper.a "$out/lib/svm/clibraries/linux-amd64/liblibchelper.a"
+
+              runHook postInstall
+            '';
+          };
+
+          runtimeLibs = [
+            pkgs.libglvnd
+            pkgs.glib
+            pkgs.gtk3
+            pkgs.pango
+            pkgs.alsa-lib
+            pkgs.ffmpeg.dev
+            pkgs.ffmpeg.lib
+            pkgs.freetype
+            pkgs.libx11
+            pkgs.libx11.dev
+            pkgs.libxext
+            pkgs.libxrender
+            pkgs.libxtst
+            pkgs.libxtst.dev
+            pkgs.libxi
+            pkgs.libxcursor
+            pkgs.libxrandr
+            pkgs.libxinerama
+            pkgs.libxcb
+            pkgs.libxxf86vm
+            pkgs.zlib
+            pkgs.zlib.dev
+          ];
+        in {
+          default = pkgs.stdenv.mkDerivation {
+            pname = "jprototerm";
+            version = "0.1.0";
+            src = ./.;
+
+            nativeBuildInputs = [
+              gluonGraalvm
+              pkgs.gradle_9
+              pkgs.makeWrapper
+              pkgs.pkg-config
+            ];
+
+            buildInputs = runtimeLibs;
+
+            buildPhase = ''
+              runHook preBuild
+
+              export HOME="$TMPDIR/home"
+              export GRADLE_USER_HOME="$TMPDIR/gradle"
+              export GRAALVM_HOME="${gluonGraalvm}"
+              export JAVA_HOME="${gluonGraalvm}"
+              export JLIBGHOSTTY_MAVEN_REPO="${jlib}/maven"
+              export LD_LIBRARY_PATH="${pkgs.lib.makeLibraryPath runtimeLibs}:$LD_LIBRARY_PATH"
+
+              gradle --no-daemon --no-build-cache nativeExecutable
+
+              runHook postBuild
+            '';
+
+            installPhase = ''
+              runHook preInstall
+
+              mkdir -p "$out/bin"
+              binary="$(find build/gluonfx -type f -perm -0100 -name jprototerm | head -n1)"
+              if [ -z "$binary" ]; then
+                echo "Could not find native jprototerm binary under build/gluonfx" >&2
+                find build/gluonfx -type f -perm -0100 >&2 || true
+                exit 1
+              fi
+
+              cp "$binary" "$out/bin/jprototerm"
+              wrapProgram "$out/bin/jprototerm" \
+                --prefix LD_LIBRARY_PATH : "${pkgs.lib.makeLibraryPath runtimeLibs}" \
+                --set GDK_BACKEND x11
+
+              runHook postInstall
+            '';
+          };
+        });
+
+      devShells = forAllSystems (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+          jlib = jlibghostty.packages.${system}.jlibghostty;
+          runtimeLibs = [
+            pkgs.libglvnd
+            pkgs.glib
+            pkgs.gtk3
+            pkgs.pango
+            pkgs.alsa-lib
+            pkgs.ffmpeg.dev
+            pkgs.ffmpeg.lib
+            pkgs.freetype
+            pkgs.libx11
+            pkgs.libx11.dev
+            pkgs.libxext
+            pkgs.libxrender
+            pkgs.libxtst
+            pkgs.libxtst.dev
+            pkgs.libxi
+            pkgs.libxcursor
+            pkgs.libxrandr
+            pkgs.libxinerama
+            pkgs.libxcb
+            pkgs.libxxf86vm
+            pkgs.zlib
+            pkgs.zlib.dev
+          ];
+        in {
+          default = pkgs.mkShell {
+            packages = [
+              pkgs.gradle_9
+              pkgs.jdk23
+              pkgs.jdt-language-server
+            ] ++ runtimeLibs;
+
+            JLIBGHOSTTY_MAVEN_REPO = "${jlib}/maven";
+            LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath runtimeLibs;
+          };
+        });
+    };
+}

src/main/java/com/gregor/jprototerm/AppConfig.java

@@ -3,6 +3,7 @@ package com.gregor.jprototerm;
 import io.github.wasabithumb.jtoml.JToml;
 import io.github.wasabithumb.jtoml.document.TomlDocument;
 import io.github.wasabithumb.jtoml.except.TomlException;
+import io.github.wasabithumb.jtoml.key.TomlKey;
 import io.github.wasabithumb.jtoml.value.TomlValue;
 import io.github.wasabithumb.jtoml.value.primitive.TomlPrimitive;
 import io.github.wasabithumb.jtoml.value.table.TomlTable;
@@ -26,6 +27,7 @@ public record AppConfig(
         double windowHeight,
         boolean kittyGraphics,
         String scrollbackEditorCommand,
+        Map<String, String> envOverride,
         Map<String, KeyBinding> keybindings
 ) {
     private static final List<String> KEYBINDING_KEYS = List.of(
@@ -62,6 +64,7 @@ public record AppConfig(
                     doubleValue(document, "window.height", defaults.windowHeight),
                     booleanValue(document, "kitty_graphics.enabled", defaults.kittyGraphics),
                     stringValue(document, "scrollback.editor_command", defaults.scrollbackEditorCommand),
+                    envOverride(document, defaults.envOverride),
                     keybindings(document, defaults)
             );
         } catch (TomlException ex) {
@@ -82,6 +85,7 @@ public record AppConfig(
                 760.0,
                 true,
                 defaultScrollbackEditorCommand(),
+                Map.of(),
                 Map.of(
                         "navigate_left", KeyBinding.parse("ALT+H"),
                         "navigate_down", KeyBinding.parse("ALT+J"),
@@ -109,6 +113,7 @@ public record AppConfig(
                 windowHeight,
                 kittyGraphics,
                 scrollbackEditorCommand,
+                envOverride,
                 keybindings
         );
     }
@@ -183,6 +188,11 @@ public record AppConfig(
         builder.append("enabled = ").append(kittyGraphics).append("\n\n");
         builder.append("[scrollback]\n");
         builder.append("editor_command = ").append(quoted(scrollbackEditorCommand)).append("\n\n");
+        builder.append("[env.override]\n");
+        for (Map.Entry<String, String> entry : envOverride.entrySet()) {
+            builder.append(entry.getKey()).append(" = ").append(quoted(entry.getValue())).append('\n');
+        }
+        builder.append('\n');
         builder.append("[keybindings]\n");
         for (String key : KEYBINDING_KEYS) {
             KeyBinding binding = keybindings.get(key);
@@ -222,6 +232,31 @@ public record AppConfig(
         }
     }
 
+    private static Map<String, String> envOverride(TomlTable table, Map<String, String> fallback) {
+        TomlValue value = table.get("env.override");
+        if (value == null || !value.isTable()) {
+            return fallback;
+        }
+
+        Map<String, String> result = new LinkedHashMap<>();
+        TomlTable overrides = value.asTable();
+        for (TomlKey key : overrides.keys(false)) {
+            if (key.size() != 1) {
+                continue;
+            }
+
+            TomlValue override = overrides.get(key);
+            if (override != null && override.isPrimitive()) {
+                try {
+                    result.put(key.get(0), override.asPrimitive().asString());
+                } catch (RuntimeException ignored) {
+                    // Ignore non-string values; environment values are strings.
+                }
+            }
+        }
+        return Map.copyOf(result);
+    }
+
     private static String stringValue(TomlTable table, String key, String fallback) {
         TomlPrimitive primitive = primitive(table, key);
         return primitive == null ? fallback : primitive.asString();

src/main/java/com/gregor/jprototerm/ShellSession.java

@@ -29,11 +29,12 @@ public final class ShellSession implements AutoCloseable {
         });
     }
 
-    public static ShellSession start(String shell, TerminalPane pane, int columns, int rows) {
+    public static ShellSession start(String shell, Map<String, String> envOverride, TerminalPane pane, int columns, int rows) {
         try {
             Map<String, String> environment = new HashMap<>(System.getenv());
             environment.put("TERM", "xterm-kitty");
             environment.put("COLORTERM", "truecolor");
+            environment.putAll(envOverride);
 
             PtyProcess process = new PtyProcessBuilder(new String[] {shell, "-i"})
                     .setEnvironment(environment)

src/main/java/com/gregor/jprototerm/TerminalWorkspace.java

@@ -259,7 +259,7 @@ public final class TerminalWorkspace implements AutoCloseable {
     private TerminalPane openPane(boolean floating) {
         TerminalPane pane = TerminalPane.create(config.columns(), config.rows(), config.maxScrollback());
         pane.setFloating(floating);
-        pane.attach(ShellSession.start(config.shell(), pane, config.columns(), config.rows()));
+        pane.attach(ShellSession.start(config.shell(), config.envOverride(), pane, config.columns(), config.rows()));
         return pane;
     }