$ nix-build -A nixpkgs.flightgear -I .
error: attribute 'nixpkgs' in selection path 'nixpkgs.flightgear' not found

[turion@nixos:~/nix/nixpkgs]$ nix-build -A pkgs.flightgear -I .
these derivations will be built:
  /nix/store/q744hxz7x1ay74zgj1yc0awzq93w08p7-flightgear-2020.1.3.drv
building '/nix/store/q744hxz7x1ay74zgj1yc0awzq93w08p7-flightgear-2020.1.3.drv'...
unpacking sources
unpacking source archive /nix/store/fdjqnjw04qwjzhsjxpha940iavcxawn4-flightgear-2020.1.3.tar.bz2
source root is flightgear-2020.1.3
setting SOURCE_DATE_EPOCH to timestamp 1593126049 of file flightgear-2020.1.3/utils/fgcom/positions.hxx
patching sources
configuring
fixing cmake files...
cmake flags: -DCMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_SKIP_BUILD_RPATH=ON -DBUILD_TESTING=OFF -DCMAKE_INSTALL_LOCALEDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/share/locale -DCMAKE_INSTALL_LIBEXECDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/libexec -DCMAKE_INSTALL_LIBDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/lib -DCMAKE_INSTALL_DOCDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/share/doc/ -DCMAKE_INSTALL_INFODIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/share/info -DCMAKE_INSTALL_MANDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/share/man -DCMAKE_INSTALL_OLDINCLUDEDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/include -DCMAKE_INSTALL_INCLUDEDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/include -DCMAKE_INSTALL_SBINDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/sbin -DCMAKE_INSTALL_BINDIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/bin -DCMAKE_INSTALL_NAME_DIR=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/lib -DCMAKE_POLICY_DEFAULT_CMP0025=NEW -DCMAKE_OSX_SYSROOT= -DCMAKE_OSX_ARCHITECTURES=x86_64 -DCMAKE_FIND_FRAMEWORK=last -DCMAKE_STRIP=/nix/store/ydk00ssq4fyx78rpmdmq1hcmz0iw575f-binutils-2.31.1/bin/strip -DCMAKE_RANLIB=/nix/store/ydk00ssq4fyx78rpmdmq1hcmz0iw575f-binutils-2.31.1/bin/ranlib -DCMAKE_AR=/nix/store/ydk00ssq4fyx78rpmdmq1hcmz0iw575f-binutils-2.31.1/bin/ar -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_INSTALL_PREFIX=/nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3
CMAKE Build type: Release
-- Setting build type to 'Dev' as none was specified.
-- The C compiler identification is GNU 9.3.0
-- The CXX compiler identification is GNU 9.3.0
-- Check for working C compiler: /nix/store/x45gpnpvbq0l3b933k187qh53y1fg7ll-gcc-wrapper-9.3.0/bin/gcc
-- Check for working C compiler: /nix/store/x45gpnpvbq0l3b933k187qh53y1fg7ll-gcc-wrapper-9.3.0/bin/gcc - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /nix/store/x45gpnpvbq0l3b933k187qh53y1fg7ll-gcc-wrapper-9.3.0/bin/g++
-- Check for working CXX compiler: /nix/store/x45gpnpvbq0l3b933k187qh53y1fg7ll-gcc-wrapper-9.3.0/bin/g++ - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- System is: Linux
-- Linux distro is:
-- Web browser launcher command is: xdg-open
-- Using default data directory for base package:  /nix/store/jz41kskqv6m24d4mvpx69fqd4vnn24nd-flightgear-2020.1.3/lib/FlightGear
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Found X11: /nix/store/q2iwlim7rkl5wpr0xik2849zq8jmng53-xorgproto-2019.1/include
-- Looking for XOpenDisplay in /nix/store/38i1jm20h13d37ba36kaxmk405m4z4ld-libX11-1.6.8/lib/libX11.so;/nix/store/1mzr5kayv650ydp2cdyp26s1hy66jzxy-libXext-1.3.4/lib/libXext.so
-- Looking for XOpenDisplay in /nix/store/38i1jm20h13d37ba36kaxmk405m4z4ld-libX11-1.6.8/lib/libX11.so;/nix/store/1mzr5kayv650ydp2cdyp26s1hy66jzxy-libXext-1.3.4/lib/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- libudev stable: 0
-- Found UDev: /nix/store/bgclxprlb560a758r9wx0c5b98dck4mp-systemd-245.6-lib/lib/libudev.so
--    include: /nix/store/wlmg7qmbb7hd10ssbkp2d6ahdn5jy9rh-systemd-245.6-dev/include
-- event-based input enabled. Using /nix/store/bgclxprlb560a758r9wx0c5b98dck4mp-systemd-245.6-lib/lib/libudev.so
-- Enabling HID-API input
CMake Warning (dev) at /nix/store/chym796aj801mr50hy0yy0cjqljsyrm3-cmake-3.17.3/share/cmake-3.17/Modules/FindPackageHandleStandardArgs.cmake:272 (message):
  The package name passed to `find_package_handle_standard_args` (PkgConfig)
  does not match the name of the calling package (DBus).  This can lead to
  problems in calling code that expects `find_package` result variables
  (e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
  /nix/store/chym796aj801mr50hy0yy0cjqljsyrm3-cmake-3.17.3/share/cmake-3.17/Modules/FindPkgConfig.cmake:45 (find_package_handle_standard_args)
  CMakeModules/FindDBus.cmake:19 (include)
  CMakeLists.txt:283 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
CMake Warning (dev) at /nix/store/chym796aj801mr50hy0yy0cjqljsyrm3-cmake-3.17.3/share/cmake-3.17/Modules/FindPackageHandleStandardArgs.cmake:272 (message):
  The package name passed to `find_package_handle_standard_args` (DBUS) does
  not match the name of the calling package (DBus).  This can lead to
  problems in calling code that expects `find_package` result variables
  (e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
  CMakeModules/FindDBus.cmake:36 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:283 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Could NOT find DBUS (missing: DBUS_INCLUDE_DIRS DBUS_LIBRARIES)
CMake Warning (dev) at /nix/store/chym796aj801mr50hy0yy0cjqljsyrm3-cmake-3.17.3/share/cmake-3.17/Modules/FindPackageHandleStandardArgs.cmake:272 (message):
  The package name passed to `find_package_handle_standard_args` (LIBEVENT)
  does not match the name of the calling package (LibEvent).  This can lead
  to problems in calling code that expects `find_package` result variables
  (e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
  CMakeModules/FindLibEvent.cmake:11 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:286 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Could NOT find LIBEVENT (missing: LIBEVENT_INCLUDE_DIR LIBEVENT_LIB)
CMake Warning at CMakeLists.txt:294 (message):
  SWIFT support disabled, dbus and/or LibEvent not found


-- Found Boost: /nix/store/9q9kycc55hslydwzcl67ywzwkmrwz4wz-boost-1.69.0-dev/include (found version "1.69.0")
CMake Warning (dev) at /nix/store/chym796aj801mr50hy0yy0cjqljsyrm3-cmake-3.17.3/share/cmake-3.17/Modules/FindOpenGL.cmake:305 (message):
  Policy CMP0072 is not set: FindOpenGL prefers GLVND by default when
  available.  Run "cmake --help-policy CMP0072" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.

  FindOpenGL found both a legacy GL library:

    OPENGL_gl_LIBRARY: /nix/store/815cqvzqysx0k8kahl472d8f0k5ss5yx-libGL-1.3.1/lib/libGL.so

  and GLVND libraries for OpenGL and GLX:

    OPENGL_opengl_LIBRARY: /nix/store/815cqvzqysx0k8kahl472d8f0k5ss5yx-libGL-1.3.1/lib/libOpenGL.so
    OPENGL_glx_LIBRARY: /nix/store/815cqvzqysx0k8kahl472d8f0k5ss5yx-libGL-1.3.1/lib/libGLX.so

  OpenGL_GL_PREFERENCE has not been set to "GLVND" or "LEGACY", so for
  compatibility with CMake 3.10 and below the legacy GL library will be used.
Call Stack (most recent call first):
  CMakeLists.txt:305 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Found OpenGL: /nix/store/815cqvzqysx0k8kahl472d8f0k5ss5yx-libGL-1.3.1/lib/libOpenGL.so
-- Found osgText: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgText.so
-- Found osgSim: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgSim.so
-- Found osgDB: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgDB.so
-- Found osgParticle: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgParticle.so
-- Found osgFX: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgFX.so
-- Found osgUtil: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgUtil.so
-- Found osgViewer: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgViewer.so
-- Found osgGA: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgGA.so
-- Found osg: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosg.so
-- Found OpenThreads: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libOpenThreads.so
-- Found OpenSceneGraph: /nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgText.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgSim.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgDB.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgParticle.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgFX.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgUtil.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgViewer.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosgGA.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libosg.so;/nix/store/1mzl96an9vaqbdmhipjkdn7g68jlci9w-openscenegraph-3.6.4/lib/libOpenThreads.so (found suitable version "3.6.4", minimum required is "3.2.0")
-- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
-- DBus not found, screensaver control disabled
-- Qt launcher enabled, checking for Qt >= 5.4 / qmake
-- Will enable Qt launcher GUI
-- Couldn't find translations data, will not include translated string in the executable
CMake Warning at /nix/store/fryj85qdkbfgbcyf9yp6xji8d2plgclv-qtbase-5.12.7-dev/lib/cmake/Qt5/Qt5Config.cmake:28 (find_package):
  By not providing "FindQt5LinguistTools.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "Qt5LinguistTools", but CMake did not find one.

  Could not find a package configuration file provided by "Qt5LinguistTools"
  with any of the following names:

    Qt5LinguistToolsConfig.cmake
    qt5linguisttools-config.cmake

  Add the installation prefix of "Qt5LinguistTools" to CMAKE_PREFIX_PATH or
  set "Qt5LinguistTools_DIR" to a directory containing one of the above
  files.  If "Qt5LinguistTools" provides a separate development package or
  SDK, be sure it has been installed.
Call Stack (most recent call first):
  CMakeModules/Translations.cmake:15 (find_package)
  CMakeLists.txt:374 (include)


CMake Warning at CMakeModules/Translations.cmake:15 (find_package):
  Found package configuration file:

    /nix/store/fryj85qdkbfgbcyf9yp6xji8d2plgclv-qtbase-5.12.7-dev/lib/cmake/Qt5/Qt5Config.cmake

  but it set Qt5_FOUND to FALSE so package "Qt5" is considered to be NOT
  FOUND.  Reason given by package:

  Failed to find Qt5 component "LinguistTools" config file at
  "/nix/store/fryj85qdkbfgbcyf9yp6xji8d2plgclv-qtbase-5.12.7-dev/lib/cmake/Qt5LinguistTools/Qt5LinguistToolsConfig.cmake"




Call Stack (most recent call first):
  CMakeLists.txt:374 (include)


CMake Error at CMakeModules/Translations.cmake:38 (translation_dir_list):
  translation_dir_list Function invoked with incorrect arguments for function
  named: translation_dir_list
Call Stack (most recent call first):
  CMakeLists.txt:374 (include)


-- Detected language files:
-- /nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/include
-- Found PLIB: optimized;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibpuaux.a;debug;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibpuaux.a;optimized;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibpu.a;debug;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibpu.a;optimized;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibsg.a;debug;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibsg.a;optimized;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibul.a;debug;/nix/store/ks925jrsqsbmdwsv7c5m799h9w4m8lpq-plib-1.8.5/lib/libplibul.a
-- Min Simgear version is 2020.1.0
-- Found ZLIB: /nix/store/5x6l9xm5dp6v113dpfv673qvhwjyb7p5-zlib-1.2.11/lib/libz.so (found version "1.2.11")
-- Looking for unistd.h
-- Looking for unistd.h - found
-- Looking for sys/time.h
-- Looking for sys/time.h - found
-- Looking for sys/timeb.h
-- Looking for sys/timeb.h - found
-- Looking for windows.h
-- Looking for windows.h - not found
-- Looking for timegm
-- Looking for timegm - found
-- Looking for daylight
-- Looking for daylight - found
-- Looking for ftime
-- Looking for ftime - found
-- Looking for gettimeofday
-- Looking for gettimeofday - found
-- RTI: DISABLED
-- OpenMP: DISABLED
-- SSE/SSE2 support: ENABLED
-- Looking for mkfifo
-- Looking for mkfifo - found
-- libudev stable: 0
-- Found UDev: /nix/store/bgclxprlb560a758r9wx0c5b98dck4mp-systemd-245.6-lib/lib/libudev.so
--    include: /nix/store/wlmg7qmbb7hd10ssbkp2d6ahdn5jy9rh-systemd-245.6-dev/include
-- Enabling legacy joystick code (from PLIB)
-- FGPanel (Raspberry Pi) : DISABLED
-- FGPanel : ENABLED
-- Found OpenAL: /nix/store/i5zqg1nk4lhllzl9hv2m289j2y7yi2dq-openal-soft-1.19.1/lib/libopenal.so
-- CppUnit: Building the FlightGear supplied CppUnit library
-- Configuring incomplete, errors occurred!
See also "/build/flightgear-2020.1.3/build/CMakeFiles/CMakeOutput.log".
See also "/build/flightgear-2020.1.3/build/CMakeFiles/CMakeError.log".
builder for '/nix/store/q744hxz7x1ay74zgj1yc0awzq93w08p7-flightgear-2020.1.3.drv' failed with exit code 1
error: build of '/nix/store/q744hxz7x1ay74zgj1yc0awzq93w08p7-flightgear-2020.1.3.drv' failed