working workspaces

linux/nix/devshell.nix

@@ -2,8 +2,15 @@
 pkgs.mkShell {
   packages = with pkgs; [
     cairo
+    pkg-config
+    libxkbcommon
     gtk-layer-shell
 
+    cargo
+    rustfmt
+    flutter_rust_bridge_codegen
+    (pkgs.writeShellScriptBin "rustup" (builtins.readFile ./fake-rustup.sh))
+
     (flutter.override {
       extraPkgConfigPackages = [
         gtk-layer-shell
@@ -11,5 +18,10 @@ pkgs.mkShell {
     })
   ];
 
-  LD_LIBRARY_PATH = "./build/linux/x64/debug/plugins/wayland_layer_shell";
+  RUST_BACKTRACE = 1;
+  LD_LIBRARY_PATH =
+    let
+      plugins = "./build/linux/x64/debug/plugins";
+    in
+    "${plugins}/wayland_layer_shell:${plugins}/rust_lib_flight";
 }

linux/nix/fake-rustup.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Fake rustup for nix-managed Rust toolchains
+
+case "$1" in
+  run)
+    if [[ "$2" == "stable" ]]; then
+      shift 2
+      if [[ $# -eq 0 ]]; then
+        echo "fake rustup: no command given" >&2
+        exit 1
+      fi
+      exec "$@"
+      exit 0
+    fi
+    ;;
+
+  toolchain)
+    if [[ "$2" == "list" ]]; then
+      echo "stable (default)"
+      exit 0
+    fi
+    ;;
+    
+  target)
+    if [[ "$2" == "list" && "$3" == "--toolchain" && "$4" == "stable" && "$5" == "--installed" ]]; then
+      echo "x86_64-unknown-linux-gnu"
+      exit 0
+    fi
+    ;;
+esac
+
+echo "fake rustup: the command:" >&2
+echo "  rustup $*" >&2
+echo "…is not mocked yet" >&2
+exit 1