dev-lang/nim: respect flags

Signed-off-by: Anna Vyalkova <cyber+gentoo@sysrq.in>
Closes: gentoo#26387
Signed-off-by: Maciej Barć <xgqt@gentoo.org>

Author: CyberTailor

dev-lang/nim/nim-1.6.6-r1.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit bash-completion-r1 multiprocessing toolchain-funcs
+inherit bash-completion-r1 multiprocessing toolchain-funcs xdg-utils
 
 DESCRIPTION="compiled, garbage-collected systems programming language"
 HOMEPAGE="https://nim-lang.org/"
@@ -24,20 +24,8 @@ DEPEND="${RDEPEND}"
 
 PATCHES=( "${FILESDIR}"/${PN}-0.20.0-paths.patch )
 
-# Generated by nim
-QA_FLAGS_IGNORED="
-usr/bin/atlas
-usr/bin/nim
-usr/bin/nim_dbg
-usr/bin/nimble
-usr/bin/nimgrep
-usr/bin/nimpretty
-usr/bin/nimsuggest
-usr/bin/testament
-"
-
 _run() {
-	echo "Running: ${@}"
+	einfo "Running: ${@}"
 	PATH="${S}/bin:${PATH}" "${@}" || die "Failed: \"${*}\""
 }
 
@@ -46,6 +34,31 @@ nim_use_enable() {
 	use "${1}" && echo "-d:${2}"
 }
 
+# Borrowed from nim-utils.eclass (guru overlay).
+nim_gen_config() {
+	cat > nim.cfg <<- EOF || die "Failed to create Nim config"
+	cc:"gcc"
+	gcc.exe:"$(tc-getCC)"
+	gcc.linkerexe:"$(tc-getCC)"
+	gcc.cpp.exe:"$(tc-getCXX)"
+	gcc.cpp.linkerexe:"$(tc-getCXX)"
+	gcc.options.speed:"${CFLAGS}"
+	gcc.options.size:"${CFLAGS}"
+	gcc.options.debug:"${CFLAGS}"
+	gcc.options.always:"${CPPFLAGS}"
+	gcc.options.linker:"${LDFLAGS}"
+	gcc.cpp.options.speed:"${CXXFLAGS}"
+	gcc.cpp.options.size:"${CXXFLAGS}"
+	gcc.cpp.options.debug:"${CXXFLAGS}"
+	gcc.cpp.options.always:"${CPPFLAGS}"
+	gcc.cpp.options.linker:"${LDFLAGS}"
+
+	$([[ "${NOCOLOR}" == true || "${NOCOLOR}" == yes ]] && echo '--colors:"off"')
+	-d:"$(usex debug debug release)"
+	--parallelBuild:"$(makeopts_jobs)"
+	EOF
+}
+
 src_prepare() {
 	default
 
@@ -55,31 +68,20 @@ src_prepare() {
 }
 
 src_configure() {
-	export XDG_CACHE_HOME="${T}/cache"  # 667182
+	xdg_environment_reset  # bug 667182
+
 	unset NIMBLE_DIR
 	tc-export CC CXX LD
 
-	local build_type
-	if use debug ; then
-		build_type="debug"
-	else
-		build_type="release"
-	fi
-	export NIM_OPTS=( --parallelBuild:$(makeopts_jobs) -d:${build_type} )
-
-	# Override defaults
-	echo "gcc.exe            = \"$(tc-getCC)\""  >> config/nim.cfg || die
-	echo "gcc.linkerexe      = \"$(tc-getCC)\""  >> config/nim.cfg || die
-	echo "gcc.cpp.exe        = \"$(tc-getCXX)\"" >> config/nim.cfg || die
-	echo "gcc.cpp.linkerexe  = \"$(tc-getCXX)\"" >> config/nim.cfg || die
+	nim_gen_config
 }
 
 src_compile() {
 	_run bash ./build.sh
 
-	_run ./bin/nim ${NIM_OPTS[@]} compile koch
-	_run ./koch boot ${NIM_OPTS[@]} $(nim_use_enable readline useGnuReadline)
-	_run ./koch tools ${NIM_OPTS[@]}
+	_run ./bin/nim compile koch
+	_run ./koch boot $(nim_use_enable readline useGnuReadline)
+	_run ./koch tools
 }
 
 src_test() {