Unable to start Bonsai

[duggi28]

I was struggling to start Bonsai and run some of the examples. After running dune build, I get the following error message:

File "examples/counters/bin/dune", line 1, characters 48-75:
1 | (executables (names main) (libraries bonsai_web bonsai_web_counters_example)
                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^
Error: Library "bonsai_web_counters_example" not found.
-> required by _build/default/examples/counters/bin/main.exe
-> required by alias examples/counters/bin/all
-> required by alias examples/counters/bin/default

[TyOverby]

are you able to build other examples, like hello_world?

[duggi28]

I was not able to build hello_world either as I got the following error:

File "examples/hello_world/dune", line 1, characters 37-47:
1 | (executables (names main) (libraries bonsai_web) (preprocess (pps ppx_jane)))
                                                                   ^^^^^^^^^
Error: Library "bonsai_web" not found.
-> required by _build/default/examples/hello_world/main.exe
-> required by alias examples/hello_world/all
-> required by alias examples/hello_world/default

I am a student who recently finished creating a blog-like application in OCaml which only works on terminal. I wanted to create a UI using Bonsai.

[TyOverby]

I would recommend copying the hello-world folder into a new opam-switch and installing bonsai from opam instead of trying to use it from the github clone

[duggi28]

I installed bonsai from opam in a new opam switch but I still received the same error message as above. I even copied the hello_world folder into a different directory.

[askvortsov1]

If using bonsai installed from opam, make sure you use the public_name value for dune libraries stanzas. For bonsai_web, this would be bonsai.web.

[duggi28]

Changing the library name to bonsai.web fixed the error. However, I am still seeing errors related to the Result_spec module. The first error is that Start.Result_spec is an unbound module. The second error is related to the lack of labels for the arguments of the start function:

File "main.ml", line 7, characters 77-86:
7 |   Start.start Start.Result_spec.just_the_view ~bind_to_element_with_id:"app" component
                                                                                 ^^^^^^^^^
Error: The function applied to this argument has type
         initial_input:'a -> ('a, 'b, 'c, 'd) Bonsai_web__Start.Handle.t
This argument cannot be applied without label

[TyOverby]

That api looks like it has the type signature from a very old version of Bonsai, could you check to see what version you have installed via opam

[duggi28]

I have version 0.14.0 and was trying to upgrade to v0.15.0. However, I kept running into the following error:

#=== ERROR while compiling conf-libssl.4 ======================================#
# context     2.1.2 | macos/x86_64 | ocaml-base-compiler.4.12.0 | https://opam.ocaml.org#9a5d6274
# path        ~/.opam/bonsai-2022sp/.opam-switch/build/conf-libssl.4
# command     ~/.opam/opam-init/hooks/sandbox.sh build sh -ex ./homebrew.sh check
# exit-code   1
# env-file    ~/.opam/log/conf-libssl-43714-3e7dfe.env
# output-file ~/.opam/log/conf-libssl-43714-3e7dfe.out
### output ###
# ++ brew --prefix openssl
# + brew_pkg_config=/usr/local/opt/openssl@3/lib/pkgconfig
# + case "$1" in
# + test 1 '!=' 1
# + export PKG_CONFIG_PATH=/usr/local/opt/openssl@3/lib/pkgconfig:/Users/rithvikduggireddy/.opam/bonsai-2022sp/lib/pkgconfig:
# + PKG_CONFIG_PATH=/usr/local/opt/openssl@3/lib/pkgconfig:/Users/rithvikduggireddy/.opam/bonsai-2022sp/lib/pkgconfig:
# + pkg-config --print-errors --exists openssl
# Package openssl was not found in the pkg-config search path.
# Perhaps you should add the directory containing `openssl.pc'
# to the PKG_CONFIG_PATH environment variable
# No package 'openssl' found



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫 
┌─ The following actions failed
│ λ build conf-libssl 4