After Gconf installation I got other new Errors: $ guix package -i gconf ... $ pwd /home/bob/Downloads/gnash-0.8.10/ $ ./configure ... ... Configurable options are:         POSIX Thread support disabled.         NPAPI plugin enabled (default). Use --disable-npapi to disable.         NPAPI plugin will be installed in /home/me/.mozilla/plugins         KPARTS 3.x plugin disabled.         KPARTS 4.x plugin disabled. Configured paths for x86_64-unknown-linux-gnu are:         GLib flags are: -I/gnu/store/na5x8wljphiw8kd6qxjn6aayg46lklxa-glib-2.56.0/include/glib-2.0 -I/gnu/store/na5x8wljphiw8kd6qxjn6aayg46lklxa-glib-2.56.0/lib/glib-2.0/include -I/gnu/store/v49ff73n974d116iv886jr922n79rvyb-pcre-8.41/include -I/gnu/store/na5x8wljphiw8kd6qxjn6aayg46lklxa-glib-2.56.0/include/glib-2.0 -I/gnu/store/na5x8wljphiw8kd6qxjn6aayg46lklxa-glib-2.56.0/lib/glib-2.0/include -I/gnu/store/v49ff73n974d116iv886jr922n79rvyb-pcre-8.41/include         GLib libs are: -L/gnu/store/na5x8wljphiw8kd6qxjn6aayg46lklxa-glib-2.56.0/lib -lglib-2.0         MP3 and video support enabled through FFmpeg         FFmpeg flags are: -D__STDC_CONSTANT_MACROS -I/gnu/store/jryhwf47ra6y7g25g0mn61ymranwr742-ffmpeg-4.0.2/include         FFmpeg libs are:  -L/gnu/store/jryhwf47ra6y7g25g0mn61ymranwr742-ffmpeg-4.0.2/lib -lavcodec -lavformat -lavutil  -lswscale         CURL flags are: -I/gnu/store/ia117b5q4pzcm81xj1hkv2qgg898v7x5-curl-7.61.1/include -DCURL_STATICLIB         CURL libs are: -L/gnu/store/ia117b5q4pzcm81xj1hkv2qgg898v7x5-curl-7.61.1/lib -lcurl         AGG Pixel format is: all ./configure: line 49954: or: command not found         Only building these ActionScript classes into the library:              You have netcat installed, which is only used for testing         You have wget installed, which is only used for testing --------         Building Cygnal media server disabled.         Enabling security features:  localconnection         Enabling statistics collecting for:  cache         GUI toolkits supported: fb,gtk,dump         Renderers supported: agg cairo         Hardware Acceleration: RawFB         Media handlers: gst ffmpeg         Using sdl for sound handling         DocBook document processing disabled (default)         Using Input Devices, Touchscreen via Tslib for Input         Using double buffering when rendering         WARNING: without --enable-docbook we will use the cached documentation                  files included in the gnash distribution. If you change files                  in doc/C, you should --enable-docbook.         WARNING: You need to have the Ming development package installed to                  run most of the tests in Gnash testsuite.                  Install it from http://www.libming.org                  or .deb users: apt-get install libming-dev                  or .rpm users: yum install libming-devel         WARNING: You need to have the Ming utilities package version 0.4 or                  higher installed to run many of the tests in Gnash testsuite.                  Install it from http://www.libming.org                  or .deb users: apt-get install libming-util                  or .rpm users: yum install ming-util                  or maybe     : yum install ming-utils         WARNING: You need to have the MTASC compiler packages installed to run                  some of the tests in Gnash testsuite.                  Install it from http://mtasc.org                  or .deb users: apt-get install mtasc                  or .rpm users: yum install mtasc         WARNING: You need to have the HAXE compiler package version 2.00 or                  higher installed to run some of the tests in Gnash testsuite.                  Install it from http://haxe.org                  or .deb users: apt-get install haxe                  or .rpm users: yum install haxe         WARNING: You need to have the swfmill tool installed to run some of                  the tests in Gnash testsuite.                  Install it from http://swfmill.org                  or .deb users: apt-get install swfmill                  or .rpm users: yum install swfmill         WARNING: You need to have swfc from SWFTools installed to run some of                  the tests in Gnash testsuite.                  Install it from http://swftools.org                  or .deb users: apt-get install swftools                  or .rpm users: yum install swftools         WARNING: You need to have as3compile from SWFTools installed to run                  some of the tests in Gnash testsuite.                  Install it from http://swftools.org         WARNING: You need to have perl installed to run some of the tests in                  Gnash testsuite.                  Install it from http://perl.org                  or .deb users: apt-get install perl                  or .rpm users: yum install perl         WARNING: You need to have csound installed                  to have real fun.                  Install it from http://www.csounds.com                  or .deb users: apt-get install csound                  or .rpm users: yum install csound         WARNING: You need the gettext package installed to use translations.                  Required for building a package or 'make distcheck'                  Install it from http://www.gnu.org/software/gettext                  or .deb users: apt-get install gettext                  or .rpm users: yum install gettext         WARNING: You need the dejagnu package installed to get a summary after                  running 'make check'.                  Install it from http://www.gnu.org/software/dejagnu                  or .deb users: apt-get install dejagnu                  or .rpm users: yum install dejagnu Gnash should still compile even with these warnings. If it doesn't, report the warnings as a bug.     RECOMMENDED: No PNG library development package installed!                  Gnash will be built without support for dynamic loading of                  PNG files.                  Install it from http://www.libpng.org                  or .deb users: apt-get install libpng12-dev                  or .rpm users: yum install libpng-devel     RECOMMENDED: If the user has not installed the necessary Gstreamer                  plugins, Gstreamer can pop up a message prompting them to.                  Install gstpbutils (>= 0.10.15) from http://www.gstreamer.net                  for that to be enabled                  or .deb users: apt-get install                                 libgstreamer-plugins-base0.10-dev                  or .rpm users: simply install the below package                  Also see --with-gstpbutils-incl and --with-gstpbutils-lib     RECOMMENDED: If you install the Speex library, Gnash will be able to                  decoded Speex encoded audio in FLV files.                  Install libspeex from http://speex.org                  or .deb users: apt-get install libspeex-dev                  or .rpm users: yum install speex-devel     RECOMMENDED: If you install the Speex DSP library, Gnash will be able to                  resample Speex encoded audio in FLV files.                  Install libspeexdsp from http://speex.org                  or .deb users: apt-get install libspeexdsp-dev                  or .rpm users: yum install speex-devel     RECOMMENDED: You need to have the zlib development packages installed to                  play compressed SWF (most of them from version 6 up) and to                  display some kinds of JPEG files.                  Install it from http://zlib.net                  or .deb users: apt-get install zlib1g-dev                  or .rpm users: yum install zlib-devel                  It may still be possible to configure without zlib.     RECOMMENDED: You need to have the freetype development packages installed                  to use device fonts.                  Install it from http://freetype.org                  or .deb users: apt-get install libfreetype6-dev                  or .rpm users: yum install freetype-devel                  It may still be possible to configure without freetype.     RECOMMENDED: You need to have the fontconfig development packages                  installed to use device fonts.                  Install it from http://fontconfig.org                  or .deb users: apt-get install libfontconfig1-dev                  or .rpm users: yum install fontconfig-devel                  It may still be possible to configure without fontconfig. Gnash should still compile, but you'll miss important support           ERROR: No JPEG library development package installed!                  Install it from http://ijg.org                  or .deb users: apt-get install libjpeg-dev                  or .rpm users: yum install libjpeg-devel           ERROR: No GIF library development package installed!                  Install it from http://sourceforge.net/projects/giflib                  or .deb users: apt-get install libungif-dev                  or maybe     : apt-get install libgif-dev                  or .rpm users: yum install libgif-devel                  or maybe     : yum install giflib-devel                  or maybe     : yum install libungif-devel           ERROR: No GTK2 development package installed!                  Install it from http://gtk.org                  or .deb users: apt-get install libgtk2.0-dev                  or .rpm users: yum install gtk2-devel           ERROR: No Pango development package installed!                  Install it from http://pango.org                  or .deb users: apt-get install libpango1.0-dev                  or .rpm users: yum install pango-devel           ERROR: No ATK development package installed!                  Install it from http://atk.org                  or .deb users: apt-get install libatk1.0-dev                  or .rpm users: yum install atk-devel           ERROR: GST media handling requested but gstreamer-0.10+ not found                  Install it from http://www.gstreamer.net                  or .deb users: apt-get install libgstreamer0.10-dev                  or .rpm users: yum install gstreamer-devel                  or yast users: yast install gstreamer010-devel           ERROR: Base plugins are required for gstreamer media!                  Install gstreamer-plugins-base from http://www.gstreamer.net                  or .deb users: apt-get install                                 libgstreamer-plugins-base0.10-dev                  or .rpm users: yum install gstreamer-plugins-base-devel           ERROR: No Cairo development package installed!                  You need to have the Cairo development package installed if                  you have used --enable-render=cairo to configure.                  Install it from http://cairographics.org                  or .deb users: apt-get install libcairo-dev                  or .rpm users: yum install cairo-devel           ERROR: No SDL development package installed!                  Install it from http://www.libsdl.org/download-1.2.php                  or .deb users: apt-get install libsdl1.2-dev                  or .rpm users: yum install SDL-devel                  or change to a different gui with --enable-gui=...           ERROR: No AGG development package installed!                  Install it from http://www.antigrain.com                  or .deb users: apt-get install libagg-dev                  or .rpm users: yum install agg-devel           ERROR: No Boost development package installed                  Install it from http://www.boost.org                  or .deb users: apt-get install libboost-dev                                 libboost-thread-dev libboost-program-options-dev                  or .rpm users: yum install boost-devel           ERROR: No xulrunner development package is installed!                  Install it from                  http://releases.mozilla.org/pub/mozilla.org/xulrunner                  or .deb users: apt-get install xulrunner-dev                  or .deb users: apt-get install firefox-dev                  or .rpm users: yum install xulrunner-devel           ERROR: No libltdl development package is installed, yet                  --disable-extensions was not specified.                  Install it from ftp://ftp.gnu.org/gnu/libtool/                  or .deb users: apt-get install libltdl-dev                  or .rpm users: yum install libtool-ltdl-devel configure: error: Please install required packages -- So I started to install all it needs: $ guix package -i libjpeg giflib libungif and so on. Will answer