We're using Pango 1.36.6.

I try to keep track of the versions in

 https://github.com/racket/racket/blob/master/racket/src/native-libs/README.txt

At Sat, 17 Feb 2018 09:20:14 -0800 (PST), Joel Dueck wrote:
> I wouldn’t know for sure, but looking at the github repo for racket/draw 
> [1] …it looks like, maybe, 1.0.0??
> 
> If so, maybe that’s the problem.
> 
> [1]: 
> https://github.com/racket/draw/blob/master/draw-lib/racket/draw/unsafe/pango.rk
> t
> 
> On Saturday, February 17, 2018 at 4:56:28 AM UTC-6, Jens Axel Søgaard wrote:
> >
> > Which version of Pango is Racket using?
> >
> > 2018-02-17 5:27 GMT+01:00 Joel Dueck <dueck...@gmail.com <javascript:>>:
> >
> >> I appreciate it. I had already tried bold and italic, but your note did 
> >> give me the idea to try specifying the weights directly, e.g. "IBM Plex 
> >> Sans, weight=700" —which, sadly, didn't solve my problem, but may have 
> >> made 
> >> the problem itself a bit more clear.
> >>
> >> Going off of the list of weights in Pango’s documentation [1] I cooked up 
> >> this test:
> >>
> >> #lang racket
> >> (require pict)
> >>
> >>  
> >>
> >> (define weights
> >>   '("100"   ; thin       (since Pango 1.24)
> >>     "200"   ; ultralight
> >>     "300"   ; light
> >>     "350"   ; semilight  (since Pango 1.36.7)
> >>     "380"   ; book       (since Pango 1.24)
> >>     "400"   ; default
> >>     "500"   ; normal     (since Pango 1.24)
> >>     "600"   ; semibold
> >>     "700"   ; bold
> >>     "800"   ; ultrabold
> >>     "900"   ; heavy
> >>     "1000")); ultraheavy (since Pango 1.24)
> >>
> >> (define (compare-weights font-name)
> >>   (apply vl-append (map (lambda (f) (text font-name (string-append 
> >> font-name ", weight=" f) 34)) weights)))
> >>
> >>
> >> When I do (compare-weights "IBM Plex Sans") it becomes obvious that 
> >> Racket is actually only able to use four of Plex Sans’s seven weights (on 
> >> macOS). 
> >>
> >> Input Serif [2] is another good example. It has six weights but this test 
> >> shows only three of them being used.
> >>
> >> [1]: 
> >> https://developer.gnome.org/pango/stable/pango-Fonts.html#PangoWeight
> >> [2]: http://input.fontbureau.com
> >>
> >> On Friday, February 16, 2018 at 3:48:51 PM UTC-6, Robby Findler wrote:
> >>>
> >>> I'm not sure what the right answer is here, but in some specific cases 
> >>> that have happened to me along these lines, I've found that specifying 
> >>> 'italic or 'bold works out. 
> >>>
> >>> Sorry that's not much to go on. 
> >>>
> >>> Robby 
> >>>
> >>>
> >>> On Thu, Feb 15, 2018 at 2:44 PM, Joel Dueck <dueck...@gmail.com> wrote: 
> >>> > Greetings, long time lurker/first time posting here. I have been 
> >>> working on 
> >>> > this one for a couple of days and can't seem to figure it out. 
> >>> > 
> >>> > I'm having an issue where on macOS, there are some fonts/variants 
> >>> returned 
> >>> > by get-face-list that I can't actually use with a drawing function 
> >>> like 
> >>> > text. 
> >>> > 
> >>> > #lang racket 
> >>> > (require pict racket/draw) 
> >>> > 
> >>> > (define (list-fonts str) 
> >>> >   (filter (lambda(s) (string=? str (substring s 0 (min (string-length 
> >>> str) 
> >>> > (string-length s))))) 
> >>> >           (get-face-list #:all-variants? #t))) 
> >>> > 
> >>> > (define (demo-font str) 
> >>> >   (apply vl-append (map (lambda (f) (text f f 30)) (list-fonts str)))) 
> >>> > 
> >>> > Attached is a screenshot comparison of the results of this code on 
> >>> Windows 
> >>> > and macOS, both using Racket 6.12. 
> >>> > 
> >>> > To sum up the problem “narratively”, as it were: on Windows, among the 
> >>> > strings returned by get-face-list is "IBM Plex Sans Text, Medium" and 
> >>> I can 
> >>> > do (text "Hello" "IBM Plex Sans Text, Medium" 30), and pict will draw 
> >>> using 
> >>> > that font. 
> >>> > 
> >>> > But on macOS, where get-face-list will include the string "IBM Plex 
> >>> Sans, 
> >>> > Text" (note comma), if I do (text "Hello" "IBM Plex Sans, Text"), I 
> >>> instead 
> >>> > get the result in the default sans serif font. 
> >>> > 
> >>> > Furthermore, all of IBM Plex Sans’s 16 weights work properly on 
> >>> > macOS/Racket—except the "Text" weight! 
> >>> > 
> >>> > A similar problem happens with some other fonts on macOS, e.g. Halyard 
> >>> Micro 
> >>> > Regular and Halyard Micro Book — the Regular weight works but the Book 
> >>> > weight displays using the Regular weight, despite using the exact 
> >>> string 
> >>> > found in get-face-list as the font/variant name in the call to text. 
> >>> > 
> >>> > I did my main example using IBM Plex Sans since it's a free font [1] 
> >>> should 
> >>> > anyone wish to replicate my results for themselves. 
> >>> > 
> >>> > How would I best go about finding out what is happening here? Are 
> >>> certain 
> >>> > words like “book” or “text” just not recognized/useable as a font 
> >>> weight on 
> >>> > macOS? Apologies if I’m missing something obvious! 
> >>> > 
> >>> > [1]: https://ibm.github.io/type/ 
> >>> > 
> >>> > -- 
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> >>>
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> >
> >
> >
> > -- 
> > -- 
> > Jens Axel Søgaard
> >
> >
> 
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