Hello, I installed a machine with these properties & sbuild (System (Debian Unstable) "i386") (Just proxy) & Sbuild.piupartsConfFor (System (Debian Unstable) "i386") & Sbuild.updatedFor (System (Debian Unstable) "i386") `period` Weekly (Just 1) & Sbuild.usableBy (User "picca") & Sbuild.shareAptCache where type Proxy = Maybe Url sbuild :: System -> Proxy -> RevertableProperty (HasInfo + Linux) Linux sbuild system@(System dist arch) proxy = Sbuild.builtFor system `before` setup where setup :: RevertableProperty (HasInfo + Linux) Linux setup = Chroot.provisioned chroot chroot = Chroot.debootstrapped Debootstrap.BuilddD chrootdir $ props & os & case proxy of (Just p) -> "/etc/apt/apt.conf.d/01proxy" `File.hasContent` ["Acquire::http::Proxy \"" ++ p ++ "\";"] Nothing -> doNothing & Apt.installed ["apt-transport-https"] & Apt.stdSourcesList & Apt.update `onChange` Apt.upgrade & Apt.cacheCleaned chrootdir :: FilePath chrootdir = "/srv/chroot" case dist of (Debian suite) -> Apt.showSuite suite ++ "-" ++ arch (Buntish suite) -> suite ++ "-" ++ arch os = case dist of (Debian suite) -> osDebian suite arch But when I use it I get this error message i686-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/«PKGBUILDDIR»/src -I/usr/include/python2.7 -c /«PKGBUILDDIR»/python/cython/_fisx.cpp -o build/temp.linux-i686-2.7/«PKGBUILDDIR»/python/cython/_fisx.o ccache: error: Failed to create directory /var/cache/ccache-sbuild/9/1: Permission denied error: command 'i686-linux-gnu-gcc' failed with exit status 1 E: pybuild pybuild:274: build: plugin distutils failed with: exit code=1: /usr/bin/python setup.py build picca@ORD03037:~/Debian/python-fisx/python-fisx$ ls -l /var/cache/ccache-sbuild/ total 76 drwxr-xr-x 2 root root 4096 juin 16 15:48 0 drwxr-xr-x 2 root root 4096 juin 16 15:48 1 drwxr-xr-x 2 root root 4096 juin 16 15:48 2 drwxr-xr-x 2 root root 4096 juin 16 15:48 3 drwxr-xr-x 2 root root 4096 juin 16 15:48 4 drwxr-xr-x 2 root root 4096 juin 16 15:48 5 drwxr-xr-x 2 root root 4096 juin 16 15:48 6 drwxr-xr-x 2 root root 4096 juin 16 15:48 7 drwxr-xr-x 2 root root 4096 juin 16 15:48 8 drwxr-xr-x 2 root root 4096 juin 16 15:48 9 drwxr-xr-x 2 root root 4096 juin 16 15:48 a drwxr-xr-x 2 root root 4096 juin 16 15:48 b drwxr-xr-x 2 root root 4096 juin 16 15:48 c -rw-rw-r-- 1 picca instrumentation 16 juin 16 16:32 ccache.conf drwxr-xr-x 2 root root 4096 juin 16 15:48 d drwxr-xr-x 2 root root 4096 juin 16 15:48 e drwxr-xr-x 2 root root 4096 juin 16 15:48 f -r-xr-xr-x 1 root root 172 juin 16 15:48 sbuild-setup drwxrwxr-x 2 picca instrumentation 4096 juin 16 16:32 tmp