Havent tried loading a notebook yet - programmatic requests and requests from livebook itself fail (meaning i cannot search or install any dependencies).
Before, I thought this was the case because of proxy/ca settings not being set, but now that they are I am quite certain this is a todo on our end.
For installing dependencies, I think you also need to set HEX_CACERTS_PATH, so that Mix.install uses the certs when talking to Hex.
For programmatic requests, such as Req.get, you need to set the proxy options yourself, as if you were writing a regular Elixir app/script.
Searching for dependencies should work though, since it’s Livebook making the requests. Is it still the same error?
HEX_CACERTS_PATH is set:
> $env:HEX_CACERTS_PATH
C:\internal_root_ca.pem
Pulling dependencies from a mix project works as intendend:
> mix phx.new hello_web
* creating hello_web/lib/hello_web/application.ex
* creating hello_web/lib/hello_web.ex
* creating hello_web/lib/hello_web_web/controllers/error_json.ex
...
Fetch and install dependencies? [Yn] y
* running mix deps.get
* running mix assets.setup
* running mix deps.compile
We are almost there! The following steps are missing:
...
so does mix hex.info:
mix hex.info ecto
A toolkit for data mapping and language integrated query for Elixir
Config: {:ecto, "~> 3.12"}
Locked version: 3.12.4
...
Results in an error message.
Failed to make a request, reason:
{:failed_connect, [{:to_address, {~c"hex.pm", 443}}, {:tls, [
server_name_indication: ~c"hex.pm",
cacertfile: ~c"\"C:\\internal_root_ca.pem\"",
verify: :verify_peer,
customize_hostname_check: [
match_fun: #Function<6.75820660/2 in :public_key.pkix_verify_hostname_match_fun/1>]],
{:options, {
:cacertfile, ~c"c:/Users/me/AppData/Local/Livebook/\"C:/internal_root_ca.pem\"",
{:error, :enoent}}}}]}
Looks like building the path to the certfile assumes a relative path and also adds " as escaped characters.
Instead of adding a dependency through search, I added it “manually” and tried to start the runtime:
Mix.install([
{:ecto, "> 0.0.0"}
])
Leads to
13:03:25.702 [error] beam\beam_load.c(607): Error loading function 'Elixir.Hex.Netrc.Cache':fetch/1: op make_fun2 u:
no specific operation found
13:03:25.710 [error] beam\beam_load.c(607): Error loading function 'Elixir.Hex.Netrc.Cache':fetch/1: op make_fun2 u:
no specific operation found
13:03:25.712 [error] Writer crashed (:"The pipe is being closed.\r\n")
13:03:25.721 [notice] Application hex exited: exited in: Hex.Application.start(:normal, [])
** (EXIT) an exception was raised:
** (ArgumentError) The module Hex.Netrc.Cache was given as a child to a supervisor but it does not exist
(elixir 1.17.2) lib/supervisor.ex:797: Supervisor.init_child/1
(elixir 1.17.2) lib/enum.ex:1703: Enum."-map/2-lists^map/1-1-"/2
(elixir 1.17.2) lib/supervisor.ex:783: Supervisor.init/2
(elixir 1.17.2) lib/supervisor.ex:707: Supervisor.start_link/2
(kernel 10.0) application_master.erl:295: :application_master.start_it_old/4
13:03:25.731 [notice] Application inets exited: :stopped
13:03:25.718 [info] init got unexpected: {:io_request, #PID<0.92.0>, #Reference<0.2950530402.328466435.66149>,
{:put_chars, :unicode,
"Failed to write log message to stdout, trying stderr\n"}}
13:03:25.738 [notice] Application ssl exited: :stopped
13:03:25.738 [notice] Application public_key exited: :stopped
13:03:25.738 [notice] Application asn1 exited: :stopped
13:03:25.738 [notice] Application crypto exited: :stopped
Could not start Hex. Try fetching a new version with "mix local.hex" or uninstalling it with "mix archive.uninstall hex.ez"
As suggested, I ran mix local.hex (successfully) and then restarted the livebook application.
cacertfile: ~c"\"C:\\internal_root_ca.pem\"",
Yeah this looks wrong. If you open iex and do System.get_env("LIVEBOOK_CACERTFILE") does it appear with the quotes or without?
Just to double check, do you have %USERPROFILE%\.livebookdesktop.bat or did you set it globally. If the file is there, are there quotes or no?
File is present.
Content was
set LIVEBOOK_CACERTFILE="C:\internal_root_ca.pem"
and is now
set LIVEBOOK_CACERTFILE=C:\internal_root_ca.pem
which leads to
> System.get_env("LIVEBOOK_CACERTFILE")
"C:\\internal_root_ca.pem"
The env variable is also defined in the user environment variables in windows’ advanced system settings as C:\internal_root_ca.pem - which is used in this case?
System.get_env(“LIVEBOOK_CACERTFILE”)
When you do it in IEx it uses the global one, not the one in .livebookdesktop.bat.
So maybe the quotes were the issue? Does the package search work now?
which is used in this case?
I think .livebookdesktop.bat should take precedence.
search works now! Thanks, well debugged 
I thought the quotes in the file make no difference, I wouldnt have caught this.
However, installing dependencies did not work yet, error remains:
error] beam\beam_load.c(607): Error loading function 'Elixir.Hex.Netrc.Cache':fetch/1: op make_fun2 u:
no specific operation found
Could be a version mismatch between Elixir and OTP?
Can I see what versions are used in the installed livebook version?
Ohh I think the deps error may be something entirely separate.
Try locating C:\Users\foo\AppData\Local\Livebook\rel\vendor\archives and see if there are multiple hex-* directories. If so, remove the older one. I think we fixed the installer to remove these automatically on new install, but maybe it didn’t work for some reason.