$ nix-build -I nixpkgs=~/nixpkgs -E 'let t1 = import <nixpkgs> {}; in let pkgs = import <nixpkgs> { crossSystem = t1.lib.s\
       ystems.examples.raspberryPi // { system = "armv6l-linux"; }; }; in pkgs.cyrus_sasl'
  9948 these derivations will be built:
  9949   /nix/store/lbvizl12gl6vglgaqmkkz9qkjq906p3s-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf.drv
  9950 building '/nix/store/lbvizl12gl6vglgaqmkkz9qkjq906p3s-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf.drv'...
  9951 unpacking sources
  9952 unpacking source archive /nix/store/3xfzqpybl544nfrahq1xzp77nd1hfk5p-cyrus-sasl-2.1.27.tar.gz
  9953 source root is cyrus-sasl-2.1.27
  9954 setting SOURCE_DATE_EPOCH to timestamp 1541700275 of file cyrus-sasl-2.1.27/man/sasl_verifyfile_t.3
  9955 patching sources
  9956 applying patch /nix/store/s88ghhri7aq8g4r2p955n71zsiwfmm8h-missing-size_t.patch
  9957 patching file include/sasl.h
  9958 Hunk #1 succeeded at 123 with fuzz 2 (offset 2 lines).
  9959 updateAutotoolsGnuConfigScriptsPhase
  9960 Updating Autotools / GNU config script to a newer upstream version: ./config/config.sub
  9961 Updating Autotools / GNU config script to a newer upstream version: ./config/config.guess
  9962 configuring
  9963 fixing libtool script ./config/ltmain.sh
  9964 configure flags: --disable-static --disable-dependency-tracking --prefix=/nix/store/a1q72z4w261frxhqpii694mqrnrg909l-cyrus-sasl-2.1.27-armv6\
       l-unknown-linux-gnueabihf --bindir=/nix/store/f5a2bnbi8523r3k2i89n2zfixs39xs51-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf-bin/bin --sb\
       indir=/nix/store/f5a2bnbi8523r3k2i89n2zfixs39xs51-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf-bin/sbin --includedir=/nix/store/dcfy8vs2\
       h05ilg7cfrmqhq89vjjs3xbq-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf-dev/include --oldincludedir=/nix/store/dcfy8vs2h05ilg7cfrmqhq89vjj\
       s3xbq-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf-dev/include --mandir=/nix/store/0cparb0n9syyj4q7drmhh0r0mx8nsn3c-cyrus-sasl-2.1.27-ar\
       mv6l-unknown-linux-gnueabihf-man/share/man --infodir=/nix/store/f5a2bnbi8523r3k2i89n2zfixs39xs51-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnue\
       abihf-bin/share/info --docdir=/nix/store/a1q72z4w261frxhqpii694mqrnrg909l-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf/share/doc/cyrus-s\
       asl --libdir=/nix/store/a1q72z4w261frxhqpii694mqrnrg909l-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf/lib --libexecdir=/nix/store/a1q72z\
       4w261frxhqpii694mqrnrg909l-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf/libexec --localedir=/nix/store/a1q72z4w261frxhqpii694mqrnrg909l-\
       cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf/share/locale --with-openssl=/nix/store/m55x5c3hgk9x2rsv7bvkaz7r6rz3df1j-openssl-1.0.2p-armv\
       6l-unknown-linux-gnueabihf-dev --with-plugindir=/nix/store/a1q72z4w261frxhqpii694mqrnrg909l-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf\
       /lib/sasl2 --with-saslauthd=/run/saslauthd --enable-login --enable-shared --build=x86_64-unknown-linux-gnu --host=armv6l-unknown-linux-gnuea\
       bihf
  9965 configure: creating cache ./config.cache
  9966 checking build system type... x86_64-unknown-linux-gnu
  9967 checking host system type... armv6l-unknown-linux-gnueabihf
  9968 checking target system type... armv6l-unknown-linux-gnueabihf
  9969 checking for a BSD-compatible install... /nix/store/dzvbhkzfgwkq97ljkcvi4gs7vmflh6a0-coreutils-8.30/bin/install -c
  9970 checking whether build environment is sane... yes
  9971 checking for armv6l-unknown-linux-gnueabihf-strip... armv6l-unknown-linux-gnueabihf-strip
  9972 checking for a thread-safe mkdir -p... /nix/store/dzvbhkzfgwkq97ljkcvi4gs7vmflh6a0-coreutils-8.30/bin/mkdir -p
  9973 checking for gawk... gawk
  9974 checking whether make sets $(MAKE)... yes
  9975 checking whether make supports nested variables... yes
  9976 checking whether UID '1000' is supported by ustar format... yes
  9977 checking whether GID '100' is supported by ustar format... yes
  9978 checking how to create a ustar tar archive... gnutar
  9979 checking for armv6l-unknown-linux-gnueabihf-gcc... armv6l-unknown-linux-gnueabihf-gcc
  9980 checking whether the C compiler works... yes
  9981 checking for C compiler default output file name... a.out
  9982 checking for suffix of executables...
  9983 checking whether we are cross compiling... yes
  9984 checking for suffix of object files... o
  9985 checking whether we are using the GNU C compiler... yes
  9986 checking whether armv6l-unknown-linux-gnueabihf-gcc accepts -g... yes
  9987 checking for armv6l-unknown-linux-gnueabihf-gcc option to accept ISO C89... none needed
  9988 checking whether armv6l-unknown-linux-gnueabihf-gcc understands -c and -o together... yes
  9989 checking for style of include used by make... GNU
  9990 checking dependency style of armv6l-unknown-linux-gnueabihf-gcc... none
  9991 checking how to run the C preprocessor... armv6l-unknown-linux-gnueabihf-gcc -E
  9992 checking for gcc... no
  9993 checking for cc... no
  9994 checking for cl.exe... no
  9995 configure: error: in `/build/cyrus-sasl-2.1.27':
  9996 configure: error: no acceptable C compiler found in $PATH
  9997 See `config.log' for more details
  9998 builder for '/nix/store/lbvizl12gl6vglgaqmkkz9qkjq906p3s-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf.drv' failed with exit code 1
  9999 error: build of '/nix/store/lbvizl12gl6vglgaqmkkz9qkjq906p3s-cyrus-sasl-2.1.27-armv6l-unknown-linux-gnueabihf.drv' failed
 10000