vms: support secrets and fix cross compilation

nixosModules/clanCore/vm.nix

@@ -3,6 +3,14 @@ let
   vmConfig = extendModules {
     modules = [
       (modulesPath + "/virtualisation/qemu-vm.nix")
+      {
+        virtualisation.fileSystems.${config.clanCore.secretsUploadDirectory} = lib.mkForce {
+          device = "secrets";
+          fsType = "9p";
+          neededForBoot = true;
+          options = [ "trans=virtio" "version=9p2000.L" "cache=loose" ];
+        };
+      }
     ];
   };
 in
@@ -52,6 +60,8 @@ in
         toplevel = vmConfig.config.system.build.toplevel;
         regInfo = (pkgs.closureInfo { rootPaths = vmConfig.config.virtualisation.additionalPaths; });
         inherit (config.clan.virtualisation) memorySize cores graphics;
+        generateSecrets = config.system.clan.generateSecrets;
+        uploadSecrets = config.system.clan.uploadSecrets;
       });
     };
 

pkgs/clan-cli/clan_cli/task_manager.py

@@ -8,7 +8,7 @@ import sys
 import threading
 import traceback
 from enum import Enum
-from typing import Any, Iterator, Type, TypeVar
+from typing import Any, Iterator, Optional, Type, TypeVar
 from uuid import UUID, uuid4
 
 from .errors import ClanError
@@ -30,7 +30,7 @@ class Command:
         self._output.put(None)
         self.done = True
 
-    def run(self, cmd: list[str]) -> None:
+    def run(self, cmd: list[str], env: Optional[dict[str, str]] = None) -> None:
         self.running = True
         self.log.debug(f"Running command: {shlex.join(cmd)}")
         self.p = subprocess.Popen(
@@ -38,6 +38,7 @@ class Command:
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
             encoding="utf-8",
+            env=env,
         )
         assert self.p.stdout is not None and self.p.stderr is not None
         os.set_blocking(self.p.stdout.fileno(), False)

pkgs/clan-cli/clan_cli/vms/create.py

@@ -1,32 +1,36 @@
 import argparse
 import asyncio
 import json
+import os
 import shlex
+import sys
 import tempfile
 from pathlib import Path
 from typing import Iterator
 from uuid import UUID
 
 from ..dirs import get_clan_flake_toplevel
-from ..nix import nix_build, nix_shell
+from ..nix import nix_build, nix_config, nix_shell
 from ..task_manager import BaseTask, Command, create_task
 from .inspect import VmConfig, inspect_vm
 
 
 class BuildVmTask(BaseTask):
     def __init__(self, uuid: UUID, vm: VmConfig) -> None:
-        super().__init__(uuid, num_cmds=4)
+        super().__init__(uuid, num_cmds=6)
         self.vm = vm
 
     def get_vm_create_info(self, cmds: Iterator[Command]) -> dict:
+        config = nix_config()
+        system = config["system"]
+
         clan_dir = self.vm.flake_url
         machine = self.vm.flake_attr
         cmd = next(cmds)
         cmd.run(
             nix_build(
                 [
-                    # f'{clan_dir}#clanInternals.machines."{system}"."{machine}".config.clan.virtualisation.createJSON' # TODO use this
-                    f'{clan_dir}#nixosConfigurations."{machine}".config.system.clan.vm.create'
+                    f'{clan_dir}#clanInternals.machines."{system}"."{machine}".config.system.clan.vm.create'
                 ]
             )
         )
@@ -48,8 +52,29 @@ class BuildVmTask(BaseTask):
             tmpdir = Path(tmpdir_)
             xchg_dir = tmpdir / "xchg"
             xchg_dir.mkdir()
+            secrets_dir = tmpdir / "secrets"
+            secrets_dir.mkdir()
             disk_img = f"{tmpdir_}/disk.img"
 
+            env = os.environ.copy()
+            env["CLAN_DIR"] = str(self.vm.flake_url)
+            env["PYTHONPATH"] = str(
+                ":".join(sys.path)
+            )  # TODO do this in the clanCore module
+            env["SECRETS_DIR"] = str(secrets_dir)
+
+            cmd = next(cmds)
+            cmd.run(
+                [vm_config["generateSecrets"]],
+                env=env,
+            )
+
+            cmd = next(cmds)
+            cmd.run(
+                [vm_config["uploadSecrets"]],
+                env=env,
+            )
+
             cmd = next(cmds)
             cmd.run(
                 nix_shell(
@@ -97,6 +122,7 @@ class BuildVmTask(BaseTask):
                 "-virtfs", "local,path=/nix/store,security_model=none,mount_tag=nix-store",
                 "-virtfs", f"local,path={xchg_dir},security_model=none,mount_tag=shared",
                 "-virtfs", f"local,path={xchg_dir},security_model=none,mount_tag=xchg",
+                "-virtfs", f"local,path={secrets_dir},security_model=none,mount_tag=secrets",
                 "-drive", f'cache=writeback,file={disk_img},format=raw,id=drive1,if=none,index=1,werror=report',
                 "-device", "virtio-blk-pci,bootindex=1,drive=drive1,serial=root",
                 "-device", "virtio-keyboard",

pkgs/clan-cli/clan_cli/vms/inspect.py

@@ -6,7 +6,7 @@ from pydantic import BaseModel
 
 from ..async_cmd import run
 from ..dirs import get_clan_flake_toplevel
-from ..nix import nix_eval
+from ..nix import nix_config, nix_eval
 
 
 class VmConfig(BaseModel):
@@ -19,9 +19,11 @@ class VmConfig(BaseModel):
 
 
 async def inspect_vm(flake_url: str, flake_attr: str) -> VmConfig:
+    config = nix_config()
+    system = config["system"]
     cmd = nix_eval(
         [
-            f"{flake_url}#nixosConfigurations.{json.dumps(flake_attr)}.config.system.clan.vm.config"
+            f'{flake_url}#clanInternals.machines."{system}"."{flake_attr}".config.system.clan.vm.config'
         ]
     )
     stdout = await run(cmd)