Given SIZE in bytes, return a string representing it in a human-readable way.

Return a reporter that shows a progress bar every time one of the TOTAL tasks is performed. Write PREFIX at the beginning of the line.

Low-level procedure to lead REPORTER to emit a report.

Return a port that continuously reports the bytes read from PORT using REPORTER, which should be a <progress-reporter> object. When CLOSE? is true, PORT is closed when the returned port is closed.

When DOWNLOAD-SIZE is passed, do not read more than DOWNLOAD-SIZE bytes from PORT. This is important to avoid blocking when the remote side won't close the underlying connection.

Like 'progress-reporter/file', but instead of returning human-readable progress reports, write "build trace" lines to be processed elsewhere.

Low-level procedure to start REPORTER.

Apply PATCH onto SOURCE, directly modifying files beneath it.

Return true if PATCH is applicable to SOURCE, a directory, which corresponds to the given Guix COMMIT, a SHA1 hexadecimal string.

Return a new comment made from STR. When MARGIN? is true, return a margin comment; otherwise return a line comment. STR must start with a semicolon and end with newline, otherwise an error is raised.

Canonicalize COMMENT, which is to be printed at INDENT, ensuring it has the "right" number of leading semicolons.

Pretty-print OBJ to PORT, attempting to at most MAX-WIDTH character columns and assuming the current column is INDENT. Comments present in OBJ are included in the output.

Lists longer than LONG-LIST are written as one element per line. Comments are passed through FORMAT-COMMENT before being emitted; a useful value for FORMAT-COMMENT is 'canonicalize-comment'. Vertical space is passed through FORMAT-VERTICAL-SPACE; a useful value of 'canonicalize-vertical-space'.

Return a vertical space corresponding to a single blank line.