feat: build carrier, a minimalist Iced smolmail client on fumi-core

scripts/devbox-libs.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env sh
+# Devbox installs library packages as their -dev outputs, which carry no
+# shared objects; the outs they reference do. Put the GUI stack's real lib
+# dirs on LD_LIBRARY_PATH — wayland, xkbcommon, EGL and vulkan are dlopened
+# at runtime, so neither rpath nor a DT_NEEDED scan can cover them. Only
+# matching package names are picked up: a blanket list would drag glibc and
+# friends onto the path for every process in the shell.
+set -e
+
+if [ -z "$DEVBOX_PACKAGES_DIR" ]; then
+    return 0 2>/dev/null || exit 0
+fi
+
+MANIFEST="$DEVBOX_PACKAGES_DIR/manifest.json"
+[ -f "$MANIFEST" ] || return 0 2>/dev/null || exit 0
+
+libs=$(python3 - "$MANIFEST" <<'EOF'
+import json, os, subprocess, sys
+
+wanted = ("wayland", "libxkbcommon", "libglvnd", "vulkan-loader", "mesa")
+manifest = json.load(open(sys.argv[1]))
+seen, dirs = set(), []
+paths = [
+    path
+    for name, el in manifest["elements"].items()
+    if any(w in name for w in wanted)
+    for path in el.get("storePaths", [])
+]
+for path in paths:
+    candidates = [path]
+    try:
+        candidates += subprocess.run(
+            ["nix-store", "-q", "--references", path],
+            capture_output=True, text=True,
+        ).stdout.split()
+    except OSError:
+        pass
+    for cand in candidates:
+        lib = os.path.join(cand, "lib")
+        base = os.path.basename(cand)
+        if lib in seen or not os.path.isdir(lib):
+            continue
+        if not any(w in base for w in wanted):
+            continue
+        if any(name.endswith(".so") or ".so." in name for name in os.listdir(lib)):
+            seen.add(lib)
+            dirs.append(lib)
+print(":".join(dirs))
+EOF
+)
+
+export LD_LIBRARY_PATH="${libs}:${DEVBOX_PACKAGES_DIR}/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"