[Therion] Including compile time in map legend

[Bill Gee]

Hello everyone - 

I am back with more TeX questions1  I can hear the groaning already ...  :-)

The goal is to include the time of compilation in the map legend.  I already 
found the Therion macro for \currentdate, and it works perfectly.  However, 
there is no equivalent macro for \currenttime.

I have been reading Knuth's tome "The TeXbook" and searching all over the 
Internet.  What I have tried:

1) Use the pdfLaTeX macro \pdfcreationdate.  This works, but produces a string 
that is nearly unintelligible.  It looks like this:  

	D:20171208103654-06’00’

Yep, that is the time ...  and the date, and the time zone offset!  Too much 
and not in a useful format.

2) Use the \the\time primitive from TeX.  This also works, except the time it 
prints is the number of minutes since midnight.  Not quite as busy as option 
one, but still not readable by ordinary mortals.

3) Using either the datetime (deprecated) or the datetime2 package.  Datetime2 
includes a definition for \DTMtime which produces the output I want.  The 
problem here is that Therion does not pass "\usepackage{datetime2}" to 
pdfLaTeX in any usable form.  I put it right after the "code tex-map" line.

The error message is:

=========
(./data.tex (./th_enc.tex) (./th_texts.tex) (./th_resources.tex
(/usr/share/texlive/texmf-dist/tex/generic/pdftex/glyphtounicode.tex))
(./th_fontdef.tex{/usr/share/texlive/texmf-dist/fonts/map/pdftex/updmap/
pdftex.
map})
! Undefined control sequence.
l.622 \usepackage
                 {datetime2}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
===========

Yes, I have the datetime2 package on my computer.  I can create sample TeX 
documents where it works as expected.

4) I created test TeX document to see if I could convert the output of \time 
into a pair of numbers that can be joined with a string.  The math is easy, 
except that pdfLateX complains about missing numbers.  The problem is that 
\time produces a string, not a number, and the \divide macro can't work with 
that.

Possible solutions:

1) Figure out a way to get pdfLaTeX to convert the output of \time into a 
number without using packages.

2) Figure out a way to get Therion to pass \usepackage{} to pdfLaTeX.

3) Add a \currenttime macro to Therion in the next version.

Any other suggestions?


-- 
Bill Gee