corretto8 crashes with anything that sniffs fonts

[themightychris]

core/jre8 comes with a fontconfig.properties and fonts/ directory under $(hab pkg path core/jre8)/lib

core/corretto8 is missing such assets though, the following minimal test case fails:

$ cat << EOF > Fonts.java
import java.awt.GraphicsEnvironment;

public class Fonts {
    public static void main(String... args) {
        String[] fonts = GraphicsEnvironment
                .getLocalGraphicsEnvironment()
                .getAvailableFontFamilyNames();

        for (String font : fonts) {
            System.out.println(font);
        }
    }
}
EOF

$ hab pkg install core/corretto8

$ hab pkg exec core/corretto8 javac Fonts.java

$ hab pkg exec core/corretto8 java Fonts
Exception in thread "main" java.lang.NullPointerException
        at sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1264)
        at sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:219)
        at sun.awt.FontConfiguration.init(FontConfiguration.java:107)
        at sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:774)
        at sun.font.SunFontManager$2.run(SunFontManager.java:431)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.font.SunFontManager.<init>(SunFontManager.java:376)
        at sun.awt.FcFontManager.<init>(FcFontManager.java:35)
        at sun.awt.X11FontManager.<init>(X11FontManager.java:57)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at java.lang.Class.newInstance(Class.java:442)
        at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:83)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
        at sun.java2d.SunGraphicsEnvironment.getFontManagerForSGE(SunGraphicsEnvironment.java:190)
        at sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:224)
        at sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:252)
        at sun.java2d.HeadlessGraphicsEnvironment.getAvailableFontFamilyNames(HeadlessGraphicsEnvironment.java:94)
        at Fonts.main(Fonts.java:7)

Copying the assets from jre8 makes it work:

$ hab pkg install core/jre8

$ cp -r $(hab pkg path core/jre8)/lib/font* $(hab pkg path core/corretto8)/jre/lib/

$ hab pkg exec core/corretto8 java Fonts
Dialog
DialogInput
Lucida Bright
Lucida Sans
Lucida Sans Typewriter
Monospaced
SansSerif
Serif

I'm lost at how to approach a proper fix. core/liberation-fonts-ttf seems to provide some fonts in the Habitat package ecosystem, but I can't make heads or tails of the fontconfig.properties file that seems to configure available fonts

See also: corretto/corretto-8#64