diff --git a/Dockerfile b/Dockerfile
index 8821ece..e447933 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -29,6 +29,6 @@ RUN pip install -r requirements.txt
 
 COPY . .
 
-RUN python -c "import constants; repos='\n'.join(['\n'.join(['', f'[{repo}]', f'Server = file://{constants.CHROOT_PATHS['packages']}/\$arch/\$repo']) for repo in constants.REPOSITORIES]); print(repos)" | tee -a /etc/pacman.conf
+RUN python -c "import distro; distro.get_kupfer_local(arch=None,in_chroot=False).repos_config_snippet()" | tee -a /etc/pacman.conf
 
 WORKDIR /
diff --git a/chroot.py b/chroot.py
index 3b3a035..10bb4b4 100644
--- a/chroot.py
+++ b/chroot.py
@@ -422,8 +422,12 @@ class Chroot:
         if not os.path.exists(source_path):
             raise Exception('Source does not exist')
         if not allow_overlay:
-            if self.active_mounts:
-                raise Exception(f'{self.name}: Chroot has submounts active: {self.active_mounts}')
+            really_active = []
+            for mnt in self.active_mounts:
+                if check_findmnt(self.get_path(mnt)):
+                    really_active.append(mnt)
+            if really_active:
+                raise Exception(f'{self.name}: Chroot has submounts active: {really_active}')
             if os.path.ismount(self.path):
                 raise Exception(f'{self.name}: There is already something mounted at {self.path}, not mounting over it.')
             if os.path.exists(os.path.join(self.path, 'usr/bin')):
diff --git a/distro.py b/distro.py
index ea10716..5507085 100644
--- a/distro.py
+++ b/distro.py
@@ -129,7 +129,7 @@ class Distro:
             for package in repo.packages:
                 results[package.name] = package
 
-    def _repos_config_snippet(self, extra_repos: dict[str, RepoInfo] = {}) -> str:
+    def repos_config_snippet(self, extra_repos: dict[str, RepoInfo] = {}) -> str:
         extras = [Repo(name, url_template=info.url_template, arch=self.arch, options=info.options, scan=False) for name, info in extra_repos.items()]
         return '\n\n'.join(repo.config_snippet() for repo in (list(self.repos.values()) + extras))
 
@@ -203,7 +203,7 @@ LocalFileSigLevel = Optional
 #
 
 '''
-        return header + self._repos_config_snippet(extra_repos)
+        return header + self.repos_config_snippet(extra_repos)
 
 
 def get_base_distro(arch: str) -> Distro:
@@ -223,5 +223,8 @@ def get_kupfer_https(arch: str) -> Distro:
     return get_kupfer(arch, KUPFER_HTTPS)
 
 
-def get_kupfer_local(arch: str) -> Distro:
-    return get_kupfer(arch, f"file://{config.get_path('packages')}/$arch/$repo")
+def get_kupfer_local(arch: str = None, in_chroot: bool = True) -> Distro:
+    if not arch:
+        arch = config.runtime['arch']
+    dir = CHROOT_PATHS['packages'] if in_chroot else config.get_path('packages')
+    return get_kupfer(arch, f"file://{dir}/$arch/$repo")
diff --git a/packages.py b/packages.py
index e453d05..54ec2cc 100644
--- a/packages.py
+++ b/packages.py
@@ -7,7 +7,7 @@ import subprocess
 from copy import deepcopy
 from joblib import Parallel, delayed
 
-from constants import REPOSITORIES, CROSSDIRECT_PKGS, QEMU_BINFMT_PKGS, GCC_HOSTSPECS, ARCHES, Arch
+from constants import REPOSITORIES, CROSSDIRECT_PKGS, QEMU_BINFMT_PKGS, GCC_HOSTSPECS, ARCHES, Arch, CHROOT_PATHS
 from config import config
 from chroot import get_build_chroot, Chroot
 from ssh import run_ssh_command, scp_put_files
@@ -53,12 +53,12 @@ class Package:
         native_chroot: Chroot,
     ) -> None:
         self.path = path
-        self._loadinfo(CHROOT_PATHS['pkgbuilds'], native_chroot)
+        self._loadinfo(native_chroot)
 
-    def _loadinfo(self, dir, native_chroot: Chroot):
+    def _loadinfo(self, native_chroot: Chroot):
         result = native_chroot.run_cmd(
             makepkg_cmd + ['--printsrcinfo'],
-            cwd=os.path.join(dir, self.path),
+            cwd=os.path.join(CHROOT_PATHS['pkgbuilds'], self.path),
             stdout=subprocess.PIPE,
         )
         lines = result.stdout.decode('utf-8').split('\n')
@@ -86,7 +86,8 @@ class Package:
         self.repo = self.path.split('/')[0]
 
         mode = ''
-        with open(os.path.join(config.get_path('pkgbuilds'), self.path, 'PKGBUILD'), 'r') as file:
+        logging.debug(config)
+        with open(os.path.join(native_chroot.get_path(CHROOT_PATHS['pkgbuilds']), self.path, 'PKGBUILD'), 'r') as file:
             for line in file.read().split('\n'):
                 if line.startswith('_mode='):
                     mode = line.split('=')[1]
@@ -630,6 +631,7 @@ def build(paths: list[str], force: bool, arch: Arch):
     if arch not in ARCHES:
         raise Exception(f'Unknown architecture "{arch}". Choices: {", ".join(ARCHES)}')
     enforce_wrap()
+    config.enforce_config_loaded()
     repo: dict[str, Package] = discover_packages()
     if arch != config.runtime['arch']:
         build_enable_qemu_binfmt(arch, repo=repo)
diff --git a/wrapper.py b/wrapper.py
index e2172c7..22b82a5 100644
--- a/wrapper.py
+++ b/wrapper.py
@@ -35,7 +35,7 @@ def wrap_docker():
             for argname in ['--config', '-C']:
                 if arg.startswith(argname):
                     done = True
-                    if arg != argname:  # arg is longer, assume --arg=value
+                    if arg.strip() != argname:  # arg is longer, assume --arg=value
                         offset = 1
                     else:
                         offset = 2
@@ -119,7 +119,7 @@ def wrap_docker():
             '--privileged',
         ] + _docker_volumes(volumes) + [tag]
 
-        kupfer_cmd = ['kupferbootstrap'] + _filter_args(sys.argv[1:])
+        kupfer_cmd = ['kupferbootstrap', '--config', '/root/.config/kupfer/kupferbootstrap.toml'] + _filter_args(sys.argv[1:])
 
         cmd = docker_cmd + kupfer_cmd
         logging.debug('Wrapping in docker:' + repr(cmd))