.getOrDefault("os.version", Os.OS_VERSION)
                .toLowerCase(Locale.ENGLISH);

        if (active && os.getFamily() != null) {
            active = determineFamilyMatch(os.getFamily(), actualOsName);
        }
        if (active && os.getName() != null) {
            active = determineNameMatch(os.getName(), actualOsName);
        }

        Activation activation = profile.getActivation();
        ActivationOS os = activation.getOs();

        boolean result = ensureAtLeastOneNonNull(os);

        if (result && os.getFamily() != null) {
            result = determineFamilyMatch(os.getFamily());
        }
        if (result && os.getName() != null) {
            result = determineNameMatch(os.getName());
        }
        if (result && os.getArch() != null) {

                p.getActivation().getOs().getArch(),
                clone.getActivation().getOs().getArch());
        assertEquals(
                p.getActivation().getOs().getFamily(),
                clone.getActivation().getOs().getFamily());
        assertEquals(
                p.getActivation().getOs().getName(),
                clone.getActivation().getOs().getName());
        assertEquals(

            if (profileOs != null) {
                org.apache.maven.model.ActivationOS os = new org.apache.maven.model.ActivationOS();

                os.setArch(profileOs.getArch());
                os.setFamily(profileOs.getFamily());
                os.setName(profileOs.getName());
                os.setVersion(profileOs.getVersion());

                activation.setOs(os);
            }

                    activationOS.setName(val);
                }
                // Family
                org = activationOS.getFamily();
                val = interpolate(org);
                if (org != val) {
                    activationOS.setFamily(val);
                }
                // Arch
                org = activationOS.getArch();
                val = interpolate(org);

                Interpolation nt = new Interpolation(oa, interpolator::interpolate);
                nt.performFor(oa.getArch(), "arch", oa::setArch);
                nt.performFor(oa.getFamily(), "family", oa::setFamily);
                nt.performFor(oa.getName(), "name", oa::setName);
                nt.performFor(oa.getVersion(), "version", oa::setVersion);
            });

            stk.push(new ActivationFrame("arch", Optional.empty()));
            validator.accept(oa.getArch());
            stk.peek().location = "family";
            validator.accept(oa.getFamily());
            stk.peek().location = "name";
            validator.accept(oa.getName());
            stk.peek().location = "version";
            validator.accept(oa.getVersion());
            stk.pop();

static final String OS_ARCH; private static final String OS_VERSION; private static final String PATH_SEP; private String family; private String name; private String version; private String arch; public void Os(); public void Os(String); public void setFamily(String); public void setName(String); public void setArch(String); public void setVersion(String); public boolean eval() throws Exception; public static boolean isFamily(String); public static boolean isName(String); public static boolean isArch(String);...