xmerge polka-ui

[LAP001175] genbox wyvern # FEATURES=nopackages xmerge polka-ui
Calculating dependencies... done!

>>> Emerging (1 of 1) media-gfx/polka-ui-0.1.7 to /usr/targets/polka-1.6.4/root/
>>> Unpacking source...
 * git revision fac5b90e9 already present
 *    committish: fac5b90e9
 * Copying sources to /usr/targets/polka-1.6.4/build/portage/media-gfx/polka-ui-0.1.7/work/polka-ui-0.1.7
 * Working copy is at fac5b90
 * Removing the useless link to wwaf/ in polka-ui repo.
 * Removing the useless link to libs/ in polka-ui repo.
>>> Source unpacked.
>>> Compiling source in /usr/targets/polka-1.6.4/build/portage/media-gfx/polka-ui-0.1.7/work/polka-ui-0.1.7 ...
 * File not found polka-ui.i !
 * File not found webapps.conf !
 *
 * ERROR: media-gfx/polka-ui-0.1.7 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2838:  Called die
 * The specific snippet of code:
 *       command -v npm > /dev/null 2>&1 || die "Nodejs is not installed";
 *  The die message:
 *   Nodejs is not installed
 *
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/usr/targets/polka-1.6.4/root//../log/media-gfx:polka-ui-0.1.7:20141031-094852.log'.
 * The ebuild environment file is located at '/usr/targets/polka-1.6.4/build/portage/media-gfx/polka-ui-0.1.7/temp/environment'.
 * This ebuild is from an overlay: '/usr/targets/polka-1.6.4/portage/polka/'
 *

 * Messages for package media-gfx/polka-ui-0.1.7 merged to /usr/targets/polka-1.6.4/root/:

 *
 * ERROR: media-gfx/polka-ui-0.1.7 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2838:  Called die
 * The specific snippet of code:
 *       command -v npm > /dev/null 2>&1 || die "Nodejs is not installed";
 *  The die message:
 *   Nodejs is not installed
 *
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/usr/targets/polka-1.6.4/root//../log/media-gfx:polka-ui-0.1.7:20141031-094852.log'.
 * The ebuild environment file is located at '/usr/targets/polka-1.6.4/build/portage/media-gfx/polka-ui-0.1.7/temp/environment'.
 * This ebuild is from an overlay: '/usr/targets/polka-1.6.4/portage/polka/'
 *
 * File not found polka-ui.i !
 * File not found webapps.conf !