community/crystal: run std_spec tests and samples

This is based on the upstream's CI config.

community/crystal/APKBUILD

@@ -9,7 +9,6 @@ _llvmver=12
 pkgdesc="The Crystal Programming Language"
 url="https://crystal-lang.org/"
 arch="x86_64 aarch64"
-options="!check" # disable for now till it fixed upstream
 license="Apache-2.0"
 depends="
 	gc-dev
@@ -40,6 +39,7 @@ subpackages="$pkgname-doc
 source="$pkgname-$pkgver.tar.gz::https://github.com/crystal-lang/$pkgname/archive/$pkgver.tar.gz
 	https://dev.alpinelinux.org/archive/crystal/crystal-$_bootver-x86_64-alpine-linux-musl.tar.gz
 	https://dev.alpinelinux.org/archive/crystal/crystal-$_bootver-aarch64-alpine-linux-musl.tar.gz
+	fix-crystal-sh.patch
 	"
 builddir="$srcdir/$pkgname-$pkgver"
 
@@ -48,6 +48,7 @@ _shardsdir="/usr/lib/$pkgname/shards"
 
 export CRYSTAL_CONFIG_VERSION="$pkgver"
 export CRYSTAL_CACHE_DIR="$srcdir/.cache"
+export LLVM_CONFIG="/usr/lib/llvm$_llvmver/bin/llvm-config"
 
 # Build static crystal binary and upload it to dev.a.o, so it can be used
 # for building crystal next time (needed for bootstrapping).
@@ -77,12 +78,15 @@ snapshot() {
 prepare() {
 	default_prepare
 
+	# FIXME: These specs fail with invalid memory access.
+	rm spec/compiler/compiler_spec.cr
+
 	cat > Makefile.local <<-EOF
 		progress = 1
 		threads = ${JOBS:-2}
 		verbose = 1
 		FLAGS = --verbose --target $CTARGET ${BUILD_STATIC:+"--link-flags=-no-pie"}
-		LLVM_CONFIG = /usr/lib/llvm$_llvmver/bin/llvm-config
+		LLVM_CONFIG = $LLVM_CONFIG
 	EOF
 }
 
@@ -91,14 +95,17 @@ build() {
 		CRYSTAL_CONFIG_BUILD_COMMIT= \
 		CRYSTAL_CONFIG_PATH="lib:$_shardsdir:$_coredir" \
 		PATH="$srcdir/$pkgname-$_bootver-$CBUILD/bin:$PATH" \
-		LLVM_CONFIG="/usr/lib/llvm$_llvmver/bin/llvm-config" \
 		release=1 \
 		static=${BUILD_STATIC:-}
 }
 
 check() {
-	make spec LLVM_CONFIG="llvm-config" PATH=".build:$PATH" \
-	SPEC_FLAGS="--no-color --verbose"
+	make std_spec threads=1 SPEC_FLAGS='--no-color --verbose'
+
+	find samples -name '*.cr' | xargs -tn 1 ./bin/crystal build --no-codegen
+
+	# Takes ~1 hour on x86_64, ~1.5 hour on aarch64.
+	#make compiler_spec threads=1 SPEC_FLAGS='--no-color --verbose'
 }
 
 package() {
@@ -136,4 +143,5 @@ sha512sums="
 305aee00d8b59cc004785b69d2b044e388fc0e68b3da1f2a385473eff63bab7eb191d56aa4761e7a969509d8c5ede1c6d696847fde609fbfcfb46e13af193422  crystal-1.2.0.tar.gz
 4c47961882a68485450b7b001ffc844d150b534bafec5f95c782d4a5bf33422f7b0a0be8be153e779bf2200da540aa1505e8345b07e9e8ef779b08e1b21a76b3  crystal-1.1.1-x86_64-alpine-linux-musl.tar.gz
 de33f8f51355e8091cc67ef9d3f29b2422311fd420c33968f9e95729c0367134d19aaeae603123306ed768bb3d098d9ab367f601ebd9c4e9fe265bae9f77489a  crystal-1.1.1-aarch64-alpine-linux-musl.tar.gz
+2ba9e26eb1e6d20681e7f2ad78e0ebd75ae0dc614624c8de90c918046d0451f43173a23981dbebb47d1da2cf58663e8b1169d7f32799b054fc0f6a6cb112b7c5  fix-crystal-sh.patch
 "

community/crystal/fix-crystal-sh.patch

+Don't print error message when there's no system-provided crystal.
+
+--- a/bin/crystal
++++ b/bin/crystal
+@@ -150,7 +150,7 @@
+ if [ -z "$CRYSTAL_CONFIG_LIBRARY_PATH" ] || [ -z "$CRYSTAL_LIBRARY_PATH" ]; then
+   CRYSTAL_INSTALLED_LIBRARY_PATH="$(
+       export PATH="$(remove_path_item "$(remove_path_item "$PATH" "$SCRIPT_ROOT")" "bin")"
+-      crystal env CRYSTAL_LIBRARY_PATH || echo ""
++      crystal env CRYSTAL_LIBRARY_PATH 2>/dev/null || echo ""
+     )"
+   export CRYSTAL_LIBRARY_PATH=${CRYSTAL_LIBRARY_PATH:-$CRYSTAL_INSTALLED_LIBRARY_PATH}
+   export CRYSTAL_CONFIG_LIBRARY_PATH=${CRYSTAL_CONFIG_LIBRARY_PATH:-$CRYSTAL_INSTALLED_LIBRARY_PATH}