*/
    public static final String OS_FAMILY;

    /**
     * Boolean indicating if the running OS is a Windows system.
     */
    public static final boolean IS_WINDOWS;

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_WINDOWS = "windows";

    /**
     * OS family that can be tested for. {@value}
     */

     */
    public static void addEnvVars(Properties props) {
        if (props != null) {
            if (envVars == null) {
                Properties tmp = new Properties();
                boolean caseSensitive = !Os.IS_WINDOWS;
                for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
                    String key = "env."

            // path was already absolute, just normalize file separator and we're done
            s = file.getPath();
        } else if (file.getPath().startsWith(File.separator)) {
            // drive-relative Windows path, don't align with project directory but with drive root
            s = file.getAbsolutePath();
        } else {
            // an ordinary relative path, align with project directory

            if (file.isAbsolute()) {
                // path was already absolute, just normalize file separator and we're done
            } else if (file.getPath().startsWith(File.separator)) {
                // drive-relative Windows path, don't align with project directory but with drive root
                file = file.getAbsoluteFile();
            } else {
                // an ordinary relative path, align with project directory

            if (path.isAbsolute()) {
                // path is already absolute, we're done
            } else if (path.getPath().startsWith(File.separator)) {
                // drive-relative Windows path, don't align with base dir but with drive root
                result = path.getAbsoluteFile();
            } else {
                // an ordinary relative path, align with base dir

        if (metadataFile.length() == 0) {
            if (!metadataFile.delete()) {
                // sleep for 10ms just in case this is windows holding a file lock
                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    // ignore
                }

                retValue = retValue.substring(2);

                if (retValue.length() >= 2 && (retValue.charAt(1) == '|' || retValue.charAt(1) == ':')) {
                    // special case: if there is a windows drive letter, then keep the original return value
                    retValue = retValue.charAt(0) + ":" + retValue.substring(2);
                } else {
                    // Now we expect the host

        assertEquals(
                Objects.equals(path.toUri().toString(), path.toUri().toASCIIString()), !Os.isFamily(Os.FAMILY_WINDOWS));
        assertEquals(mojo.uri, path.toUri());
        assertEquals(mojo.path, path);
        assertEquals(mojo.uriString, path.toUri().toString());
        assertEquals(mojo.uriAsciiString, path.toUri().toASCIIString());

                    .repositories(List.of(central))
                    .pluginRepositories(List.of(centralWithNoUpdate))
                    .build();
        }

        // for the special case of a drive-relative Windows path, make sure it's absolute to save plugins from trouble
        String localRepository = effective.getLocalRepository();
        if (localRepository != null && !localRepository.isEmpty()) {

        assertEquals(
                Objects.equals(path.toUri().toString(), path.toUri().toASCIIString()), !Os.isFamily(Os.FAMILY_WINDOWS));
        assertEquals(mojo.uri, path.toUri());
        assertEquals(mojo.path, path);
        assertEquals(mojo.uriString, path.toUri().toString());
        assertEquals(mojo.uriAsciiString, path.toUri().toASCIIString());