Re: How to make GNU Guile more successful

[Arne Babenhauserheide]

David Kastrup <address@hidden> writes:

> Nala Ginrut <address@hidden> writes:
>
>> I think we have to elaborate the question clearer.
>>
>> 1. How to make guile-scheme more successful?
>> I think this is similar to ask "how to make scheme more successful".
>> This is the big question to the whole scheme community.
>>
>> 2. How to make guile platform more successful?
>> I this case, let me ask a question, if we have guile-python3
>> (compatible with most of Python3 features), and provide more
>> convenient FFI helper function to help bind more libraries in short
>> time, is it possible to attract more people from Python land? Given
>> we'll have good JIT compiler in the future.
>
> Frankly, I doubt that migration of large Python-based applications is
> going to be a thing when nobody can even be bothered with immersing
> himself in the problems with migrating LilyPond from Guile-1.8 to
> Guile-2.

I worked on testing Lilypond with user installed Guile 2.x, does that
count?

Just to have it recorded somewhere, here’s a patch to lilypond along
with a copy of the bash history of the setup (cleaned up, it was many
times as long):

## patch

From bd2ffea6f4c4c1ede13f5ac82d0a8ce31ccfe3c7 Mon Sep 17 00:00:00 2001
Subject: [PATCH] Build fixes for Guile 2.1.x (not yet functional)

---
 configure.ac         | 7 ++++++-
 lily/pdf-scheme.cc   | 4 ++++
 scm/memory-trace.scm | 3 ++-
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index d77ea15..393976b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -267,7 +267,12 @@ STEPMAKE_FREETYPE2(freetype2, REQUIRED, 2.1.10)
 STEPMAKE_WINDOWS
 
 # guile executable for some scripts
-STEPMAKE_GUILE(OPTIONAL, 1.8.2, 1.9.0)
+if test "$GUILEv2" = "yes"
+then
+    STEPMAKE_GUILE(OPTIONAL, 2.0.7, 2.2.0)
+else
+    STEPMAKE_GUILE(OPTIONAL, 1.8.2, 1.9.0)
+fi
 
 # perl for help2man and for mf2pt1.pl
 STEPMAKE_PERL(REQUIRED)
diff --git a/lily/pdf-scheme.cc b/lily/pdf-scheme.cc
index da2ce2c..f5ae70c 100644
--- a/lily/pdf-scheme.cc
+++ b/lily/pdf-scheme.cc
@@ -91,7 +91,11 @@ LY_DEFINE (ly_encode_string_for_pdf, 
"ly:encode-string-for-pdf",
    *                  (string->utf16 str 'big)
    */
   if (g)
+#if GUILEV2
+    return scm_take_locale_stringn (g, bytes_written); // scm_take_str 
eventually frees g!
+#else
     return scm_take_str (g, bytes_written); // scm_take_str eventually frees g!
+#endif
   else
     return str;
 }
diff --git a/scm/memory-trace.scm b/scm/memory-trace.scm
index d8ffeb9..9ebd722 100644
--- a/scm/memory-trace.scm
+++ b/scm/memory-trace.scm
@@ -2,7 +2,8 @@
 
 (define-module (scm memory-trace))
 (use-modules (lily)
-             (ice-9 format))
+             (ice-9 format)
+             (ice-9 threads))
 
 (define-public (mtrace:start-trace freq)
   (set! usecond-interval (inexact->exact (/ 1000000 freq)))
-- 
2.10.2


## bash history

sudo emerge media-fonts/tex-gyre
sudo nano /etc/portage/package.keywords/sonstiges 
sudo emerge media-fonts/tex-gyre
sudo pmerge dblatex
git clone git://git.sv.gnu.org/lilypond.git
cd lilypond/
./autogen.sh --prefix ~/.local --enable-guile2
mkdir -p ~/texmf/lh
cp ~/Downloads/lhfnt35g-source.zip ~/texmf/lh/
unzip lhfnt35g-source.zip 
cd ~/texmf/source/latex/lh
latex lcyfonts.ins 
latex ot2fonts.ins; latex t2ccfonts.ins
ls ~/texmf/examples/
mkdir ~/texmf/lh
cp *sty ~/texmf/lh/
./autogen.sh --prefix ~/.local --enable-guile2
sudo emerge dev-texlive/texlive-langcyrillic
sudo pmerge dev-texlive/texlive-langcyrillic
make out/lilypond-invoke-editor
cd scripts/
/home/arne/lilypond/scripts/build/out/help2man out/lilypond-invoke-editor 
--no-discard-stderr
/home/arne/lilypond/scripts/build/out/help2man out/lilypond-invoke-editor 
./autogen.sh --prefix ~/.local --enable-guile2
make
LD_LIBRARY_PATH=/home/arne/.local/lib/guile/2.2/ g++ -o out/lilypond  
./out/modified-font-metric.o ./out/sequential-iterator.o 
./out/hara-kiri-group-spanner.o ./out/completion-note-heads-engraver.o 
./out/slur-score-parameters.o ./out/flag.o ./out/span-arpeggio-engraver.o 
./out/beam-quanting.o ./out/dynamic-performer.o ./out/parse-scm.o ./out/tie.o 
./out/bend-engraver.o ./out/staff-spacing.o ./out/rest-collision-engraver.o 
./out/simple-spacer-scheme.o ./out/audio-item.o ./out/pdf-scheme.o 
./out/paper-score.o ./out/slur-configuration.o ./out/constrained-breaking.o 
./out/score-engraver.o ./out/unpure-pure-container.o 
./out/multi-measure-rest-engraver.o ./out/system-start-delimiter-engraver.o 
./out/context-property.o ./out/freetype.o ./out/interval-minefield.o 
./out/kievan-ligature.o ./out/completion-rest-engraver.o 
./out/pure-from-neighbor-engraver.o ./out/horizontal-bracket-engraver.o 
./out/grob-closure.o ./out/default-bar-line-engraver.o 
./out/control-track-performer.o ./out/file-name-map.o ./out/audio-staff.o 
./out/line-spanner.o ./out/grob-info.o ./out/spring.o ./out/slur.o 
./out/music-scheme.o ./out/program-option.o ./out/fretboard-engraver.o 
./out/hyphen-engraver.o ./out/page-marker.o ./out/global-vars.o 
./out/stream-event-scheme.o ./out/script-column-engraver.o ./out/bezier-bow.o 
./out/page-breaking-scheme.o ./out/lily-version.o ./out/repeat-tie-engraver.o 
./out/tweak-engraver.o ./out/staff-symbol-referencer.o ./out/moment-scheme.o 
./out/note-heads-engraver.o ./out/paper-outputter.o ./out/music-wrapper.o 
./out/grob.o ./out/performance-scheme.o ./out/bar-line.o 
./out/page-turn-engraver.o ./out/dimensions-scheme.o 
./out/tab-note-heads-engraver.o ./out/piano-pedal-bracket.o 
./out/spaceable-grob.o ./out/event-iterator.o 
./out/lyric-combine-music-iterator.o ./out/percent-repeat-iterator.o 
./out/audio-element-info.o ./out/midi-cc-announcer.o ./out/font-metric.o 
./out/note-spacing-engraver.o ./out/duration-scheme.o 
./out/accidental-placement.o ./out/music-iterator.o ./out/rhythmic-head.o 
./out/grob-array.o ./out/tab-tie-follow-engraver.o ./out/context.o 
./out/dispatcher.o ./out/scale.o ./out/chord-name-engraver.o 
./out/auto-change-iterator.o ./out/tie-engraver.o ./out/grid-line-interface.o 
./out/forbid-break-engraver.o ./out/note-column.o ./out/lookup.o 
./out/global-ctor.o ./out/custos-engraver.o ./out/piano-pedal-engraver.o 
./out/simple-music-iterator.o ./out/pitch-scheme.o 
./out/mensural-ligature-engraver.o ./out/articulations.o 
./out/horizontal-bracket.o ./out/script-column.o ./out/global-context.o 
./out/slur-performer.o ./out/guile-init.o ./out/stencil-scheme.o 
./out/font-size-engraver.o ./out/rest-engraver.o ./out/skyline.o 
./out/percent-repeat-item.o ./out/enclosing-bracket.o ./out/module-scheme.o 
./out/input.o ./out/paper-outputter-scheme.o ./out/spacing-interface.o 
./out/break-align-engraver.o ./out/chord-tremolo-iterator.o 
./out/general-scheme.o ./out/least-squares.o ./out/audio-element.o 
./out/paper-system.o ./out/lily-lexer-scheme.o ./out/beam.o 
./out/music-sequence.o ./out/music.o ./out/stem.o ./out/relative-octave-check.o 
./out/keyword.o ./out/translator-ctors.o ./out/stencil-integral.o 
./out/arpeggio-engraver.o ./out/extender-engraver.o ./out/prob-scheme.o 
./out/ligature-engraver.o ./out/lyric-hyphen.o ./out/simple-spacer.o 
./out/output-property-engraver.o ./out/drum-note-performer.o 
./out/fingering-column-engraver.o ./out/midi-item.o ./out/undead.o 
./out/repeat-acknowledge-engraver.o ./out/grace-engraver.o 
./out/figured-bass-position-engraver.o ./out/tie-formatting-problem.o 
./out/context-mod-scheme.o ./out/pfb.o ./out/fingering-engraver.o 
./out/profile.o ./out/break-alignment-interface.o 
./out/trill-spanner-engraver.o ./out/multi-measure-rest.o 
./out/collision-engraver.o ./out/system-start-delimiter.o 
./out/one-line-auto-height-breaking.o ./out/minimal-page-breaking.o 
./out/dot-column-engraver.o ./out/note-name-engraver.o ./out/breathing-sign.o 
./out/paper-book.o ./out/sustain-pedal.o ./out/tie-configuration.o 
./out/staff-grouper-interface.o ./out/output-def.o ./out/nested-property.o 
./out/timing-translator.o ./out/protected-scm.o ./out/volta-bracket.o 
./out/beam-performer.o ./out/beaming-pattern.o ./out/prob.o 
./out/part-combine-engraver.o ./out/smobs.o ./out/system.o 
./out/figured-bass-engraver.o ./out/paper-def.o ./out/performer-group.o 
./out/rhythmic-column-engraver.o ./out/volta-engraver.o 
./out/paper-column-engraver.o ./out/scm-hash.o ./out/beam-collision-engraver.o 
./out/apply-context-iterator.o ./out/skyline-pair.o ./out/gdb.o 
./out/spacing-spanner.o ./out/stanza-number-align-engraver.o 
./out/line-interface.o ./out/measure-grouping-spanner.o 
./out/staff-symbol-referencer-scheme.o ./out/stem-engraver.o 
./out/font-metric-scheme.o ./out/beam-engraver.o ./out/freetype-error.o 
./out/instrument-name-engraver.o ./out/partial-iterator.o ./out/lily-lexer.o 
./out/metronome-engraver.o ./out/warn-scheme.o ./out/includable-lexer.o 
./out/item.o ./out/spacing-engraver.o ./out/relocate.o 
./out/pointer-group-interface.o ./out/measure-grouping-engraver.o 
./out/grace-music.o ./out/staff-performer.o ./out/slur-engraver.o 
./out/function-documentation.o ./out/dots.o ./out/performer.o 
./out/page-spacing.o ./out/separating-line-group-engraver.o 
./out/axis-group-interface-scheme.o ./out/box.o 
./out/spacing-determine-loose-columns.o ./out/duration.o 
./out/stencil-expression.o ./out/phrasing-slur-engraver.o 
./out/side-position-interface.o ./out/pitch-interval.o ./out/accidental.o 
./out/pure-from-neighbor-interface.o ./out/optimal-page-breaking.o 
./out/spanner-break-forbid-engraver.o ./out/drum-note-engraver.o 
./out/stanza-number-engraver.o ./out/midi-walker.o ./out/ly-module.o 
./out/span-bar-stub-engraver.o ./out/book-scheme.o ./out/grid-point-engraver.o 
./out/scheme-engraver.o ./out/dot-column.o ./out/note-head-scheme.o 
./out/lily-imports.o ./out/font-config-scheme.o ./out/open-type-font-scheme.o 
./out/hairpin.o ./out/quote-iterator.o ./out/ledger-line-engraver.o 
./out/auto-beam-engraver.o ./out/pango-font.o ./out/misc.o 
./out/repeated-music.o ./out/figured-bass-continuation.o ./out/grace-iterator.o 
./out/cue-clef-engraver.o ./out/pango-select.o ./out/main.o 
./out/music-wrapper-iterator.o ./out/pitch-squash-engraver.o 
./out/tuplet-iterator.o ./out/stencil-interpret.o 
./out/key-signature-interface.o ./out/pitched-trill-engraver.o ./out/score.o 
./out/context-mod.o ./out/fingering-column.o ./out/music-function-scheme.o 
./out/bar-number-engraver.o ./out/break-substitution.o ./out/sources.o 
./out/piano-pedal-performer.o ./out/performance.o ./out/volta-repeat-iterator.o 
./out/slash-repeat-engraver.o ./out/font-config.o ./out/lily-guile.o 
./out/balloon.o ./out/text-spanner-engraver.o ./out/bezier.o ./out/stencil.o 
./out/clef.o ./out/spacing-basic.o ./out/dynamic-engraver.o 
./out/time-signature-engraver.o ./out/ottava-engraver.o ./out/music-output.o 
./out/lily-parser.o ./out/ligature-bracket-engraver.o 
./out/translator-dispatch-list.o ./out/lily-parser-scheme.o 
./out/engraver-scheme.o ./out/dynamic-align-engraver.o 
./out/part-combine-iterator.o ./out/custos.o ./out/translator-scheme.o 
./out/slur-scoring.o ./out/accidental-engraver.o ./out/rest-collision.o 
./out/staff-symbol-engraver.o ./out/spanner.o ./out/note-column-scheme.o 
./out/piano-pedal-align-engraver.o ./out/clef-modifier.o ./out/note-performer.o 
./out/pango-font-scheme.o ./out/melody-spanner.o ./out/tie-column.o 
./out/tuplet-bracket.o ./out/episema-engraver.o ./out/lyric-extender.o 
./out/grob-property.o ./out/lyric-combine-music.o ./out/vaticana-ligature.o 
./out/cluster-engraver.o ./out/instrument-switch-engraver.o 
./out/part-combine-part-iterator.o ./out/audio-column.o ./out/key-performer.o 
./out/gregorian-ligature-engraver.o ./out/context-specced-music-iterator.o 
./out/pango-select-scheme.o ./out/translator-group.o ./out/book.o 
./out/stream-event.o ./out/staff-symbol.o ./out/font-interface.o 
./out/lyric-engraver.o ./out/page-breaking.o ./out/engraver-group.o 
./out/grob-smob.o ./out/grob-array-scheme.o ./out/rod.o ./out/moment.o 
./out/dispatcher-scheme.o ./out/lilypond-version.o 
./out/tab-staff-symbol-engraver.o ./out/font-select.o 
./out/grob-interface-scheme.o ./out/tuplet-engraver.o ./out/balloon-engraver.o 
./out/template5.o ./out/paper-column.o ./out/script-row-engraver.o 
./out/clef-engraver.o ./out/one-page-breaking.o ./out/midi-chunk.o 
./out/context-def.o ./out/paper-score-scheme.o ./out/axis-group-engraver.o 
./out/cluster.o ./out/translator.o ./out/item-scheme.o 
./out/double-percent-repeat-engraver.o ./out/separation-item.o 
./out/key-engraver.o ./out/keep-alive-together-engraver.o ./out/source-file.o 
./out/all-font-metrics-scheme.o ./out/self-alignment-interface.o 
./out/axis-group-interface.o ./out/midi-cc-performer.o ./out/input-scheme.o 
./out/lyric-performer.o ./out/grid-line-span-engraver.o 
./out/glissando-engraver.o ./out/event-chord-iterator.o ./out/chord-name.o 
./out/spring-smob.o ./out/score-performer.o ./out/paper-system-scheme.o 
./out/coherent-ligature-engraver.o ./out/context-scheme.o ./out/tie-performer.o 
./out/semi-tie.o ./out/chord-tremolo-engraver.o ./out/pitch.o ./out/listener.o 
./out/percent-repeat-engraver.o ./out/note-head.o ./out/relative-octave-music.o 
./out/note-spacing.o ./out/dimension-cache.o ./out/spacing-loose-columns.o 
./out/melody-engraver.o ./out/page-spacing-result.o ./out/script-engraver.o 
./out/ttf.o ./out/dot-formatting-problem.o ./out/all-font-metrics.o 
./out/ledger-line-spanner.o ./out/staff-collecting-engraver.o 
./out/spacing-options.o ./out/time-signature-performer.o ./out/pfb-scheme.o 
./out/property-iterator.o ./out/vaticana-ligature-engraver.o 
./out/script-interface.o ./out/score-scheme.o ./out/one-line-page-breaking.o 
./out/page-marker-scheme.o ./out/spanner-scheme.o ./out/music-function.o 
./out/ambitus-engraver.o ./out/new-fingering-engraver.o 
./out/bar-check-iterator.o ./out/change-iterator.o ./out/context-handle.o 
./out/parenthesis-engraver.o ./out/align-interface.o 
./out/change-sequence-iterator.o ./out/column-x-positions.o 
./out/output-def-scheme.o ./out/global-context-scheme.o ./out/tie-details.o 
./out/rest.o ./out/note-collision.o ./out/dot-configuration.o 
./out/tempo-performer.o ./out/translator-group-ctors.o ./out/ottava-bracket.o 
./out/stem-tremolo.o ./out/mensural-ligature.o ./out/grob-pq-engraver.o 
./out/lily-modules.o ./out/page-turn-page-breaking.o ./out/gregorian-ligature.o 
./out/engraver.o ./out/rhythmic-music-iterator.o ./out/mark-engraver.o 
./out/page-layout-problem-scheme.o ./out/vertical-align-engraver.o 
./out/kievan-ligature-engraver.o ./out/tie-specification.o 
./out/tuplet-number.o ./out/laissez-vibrer-engraver.o ./out/dots-engraver.o 
./out/directional-element-interface.o ./out/concurrent-hairpin-engraver.o 
./out/line-interface-scheme.o ./out/paper-book-scheme.o 
./out/pointer-group-interface-scheme.o ./out/grob-interface.o 
./out/open-type-font.o ./out/span-bar-engraver.o ./out/midi-stream.o 
./out/page-layout-problem.o ./out/input-smob.o ./out/note-head-line-engraver.o 
./out/bar-engraver.o ./out/text-interface.o ./out/text-engraver.o 
./out/grob-scheme.o ./out/arpeggio.o ./out/semi-tie-column.o 
./out/program-option-scheme.o ./out/footnote-engraver.o 
./out/simultaneous-music-iterator.o ./out/breathing-sign-engraver.o 
./out/grace-spacing-engraver.o ./out/lexer.o ./out/parser.o 
./out/../../flower/out/library.a  -ldl   -L/home/arne/.local/lib 
-L/home/arne/.local/lib/guile/2.2 -lguile-2.2 -lgc  -lpangoft2-1.0 -lpango-1.0 
-lgobject-2.0 -lglib-2.0 -lfontconfig -lfreetype  -lfontconfig -lfreetype  
-lfreetype -v 2>&1 | grep -i lib
nm out/lilypond 
LD_LIBRARY_PATH=~/.local/lib/  out/lilypond 
GUILE_LOAD_PATH=$GUILE_LOAD_PATH:../:../scm LD_LIBRARY_PATH=~/.local/lib/  
out/lilypond 
wget http://infinite-hands.draketo.de/infinite_hands_sheet.ly
wget -O mf/out/emmentaler-20.otf 
https://github.com/saebekassebil/subito/raw/master/resources/gonville/lilyfonts/otf/emmentaler-20.otf
GUILE_LOAD_PATH=$GUILE_LOAD_PATH:.:scm LD_LIBRARY_PATH=~/.local/lib/  
lily/out/lilypond -I ly/ -I mf/out/ -I ps/ test.ly
cp lilypond-data_2.18.2-4.1_all.deb /tmp
scp kav:/usr/share/lilypond/2.16.2/fonts/otf/*otf mf/out/
GUILE_LOAD_PATH=$GUILE_LOAD_PATH:.:scm LD_LIBRARY_PATH=~/.local/lib/  
lily/out/lilypond -I ly/ -I mf/out/ -I ps/ test.ly
git add configure.ac lily/general-scheme.cc lily/pdf-scheme.cc 
scm/memory-trace.scm
time GUILE_LOAD_PATH=$GUILE_LOAD_PATH:.:scm LD_LIBRARY_PATH=~/.local/lib/  
lily/out/lilypond -I ly/ -I mf/out/ -I ps/ infinite_hands_sheet.ly 
cat 0001-Build-fixes-for-Guile-2.1.x-not-yet-functional.patch
cat > 1 <<EOF
diff --git a/lily/general-scheme.cc b/lily/general-scheme.cc
index 1168ee9..2df63fc 100644
--- a/lily/general-scheme.cc
+++ b/lily/general-scheme.cc
@@ -275,7 +275,8 @@ LY_DEFINE (ly_protects, "ly:protects",
 #if SCM_MAJOR_VERSION < 2 || SCM_MAJOR_VERSION == 2 && SCM_MINOR_VERSION < 1
   return scm_protects;
 #else
-  return programming_error ("ly:protects is not supported in Guile 2.1");
+  // return programming_error ("ly:protects is not supported in Guile 2.1");
+  return 0; // FIXME: Evil hack just to get this to build.
 #endif
 }
EOF

Best wishes,
Arne

PS: If this provides at least a small step towards guile 2 in lilypond,
    it’s worth its while.
-- 
Unpolitisch sein
heißt politisch sein
ohne es zu merken

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