b1az

b1az

I’m still getting "a previous clause at line 1 always matches" warning below, even though I long ago removed the .ex file that was re-defining the problematic DefineMessage module from exprotobuf:

> mix deps.compile
> mix compile

==> my_app
Compiling 13 files (.ex)
warning: this clause cannot match because a previous clause at line 1 always matches
  lib/exprotobuf/define_message.ex:1

This was indeed a valid warning for this project, as it used to contain a same-named module DefineMessage. The module was in a file under config/, and on deployment it would overwrite exprotobuf’s own module: we’d literally do

cp config/our_define_message.ex  \
  deps/exprotobuf/lib/exprotobuf/define_message.ex

A similar issue on GitHub was supposedly already resolved.

In despair, grep from the project root, with grouped output between .elixir_ls/, _build/ and deps/:

> grep -R DefineMessage .

Binary file ./.elixir_ls/dialyzer_tmp/.elixir_ls/build/_test/lib/exprotobuf/ebin/Elixir.Protobuf.Builder.beam matches
Binary file ./.elixir_ls/dialyzer_tmp/.elixir_ls/build/_test/lib/exprotobuf/ebin/Elixir.Protobuf.DefineMessage.beam matches
./.elixir_ls/build/_test/lib/exprotobuf/ebin/exprotobuf.app:                        'Elixir.Protobuf.DefineMessage',
Binary file ./.elixir_ls/build/_test/lib/exprotobuf/ebin/Elixir.Protobuf.Builder.beam matches
Binary file ./.elixir_ls/build/_test/lib/exprotobuf/ebin/Elixir.Protobuf.DefineMessage.beam matches

Binary file ./_build/dev/lib/my_app/.mix/compile.app_tracer matches

./_build/dev/lib/exprotobuf/ebin/exprotobuf.app:                        'Elixir.Protobuf.DefineMessage',
Binary file ./_build/dev/lib/exprotobuf/ebin/Elixir.Protobuf.Builder.beam matches
Binary file ./_build/dev/lib/exprotobuf/ebin/Elixir.Protobuf.DefineMessage.beam matches

grep: ./deps/setup/xtest/testapp-2/rebar: No such file or directory
grep: ./deps/setup/xtest/testapp-1/rebar: No such file or directory

./deps/exprotobuf/lib/exprotobuf/define_message.ex:defmodule Protobuf.DefineMessage do
./deps/exprotobuf/lib/exprotobuf/builder.ex:  import Protobuf.DefineMessage, only: [def_message: 3]

Any ideas where the issue might lie much appreciated.

Showing Posts 1 to 10

patfranciso

patfranciso

Try
$ mix clean

before

$ mix compile

b1az

b1az OP

Thanks for the suggestion. Alas, neither mix clean nor mix clean --deps worked.

mix clean --deps seems to delete _build/$MIX_ENV. I even tried rm -rf deps/ _build/ before in vain. Open to further suggestions, I need to get rid of this last warning.

PS. Recloned the project, ran rm -rf .git _build deps and recompiled. Still, the warning persists.

Maybe unrelated, but even with elixir set to 1.10.4 via asdf…

$ asdf install
elixir 1.10.4-otp-23 is already installed
erlang 23.1 is already installed

… elixir --version still returns 1.11.2.

$ elixir --version  
Erlang/OTP 23 [erts-11.1] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]

Elixir 1.11.2 (compiled with Erlang/OTP 23)
axelson

axelson

Scenic Core Team

Maybe you’ve installed something as a global archive? Also something appears to be incorrect in your asdf setup if the incorrect version is being used. Does asdf current also show 1.10.4? What does which -a elixir show?

b1az

b1az OP

Thanks for the help Jason. I’ve looked further into both areas you mention, global archives and asdf.

Global archive

I think these are the only global archives.

$ ls ~/.mix/archives
hex-0.20.1           hex.ez        phoenix_new-1.1.2.ez   phx_new-1.4.10

asdf v0.8.0

asdf current looks ok.

$ asdf current
elixir          1.10.4-otp-23   ~/my_app/.tool-versions
erlang          23.1            ~/my_app/.tool-versions

List of all elixir executables ok as well.

$ which -a elixir
~/.asdf/shims/elixir
/usr/local/bin/elixir

And the content of the above shim.

#!/usr/bin/env bash
# asdf-plugin: elixir
exec /usr/local/opt/asdf/bin/asdf exec "elixir" "$@" # Running this with "--version" arg does return 1.11.2 though

Worth noting that I also ‘fixed’ the syntax error before: "$@" issue with asdf’s mix shim and changed ~/.asdf/shims/mix from

#!/usr/bin/env bash
# asdf-plugin: elixir
exec /usr/local/opt/asdf/bin/asdf exec "mix" "$@"

to a ‘working’ version.

#!/usr/bin/env elixir
Mix.start
Mix.CLI.main
factoryd

factoryd

I’ve had this happen quite a bit and removing the ElixiLS directory always resolves it.

rm -rf ./.elixir_ls

b1az

b1az OP

Thanks. Alas, even

rm -rf .elixir_ls deps _build
mix deps.get
mix compile

didn’t resolve this warning.

ericmj

ericmj

Elixir Core Team

Can you share the project or a project that reproduces the issue so that we can take a look?

b1az

b1az OP

Yes, will try to reproduce in a sample project. If that fails, I’ll try to get an approval from the stakeholders.

avix990

avix990

I’m having a similar issue with one of my projects, where one of the types modules for Absinthe, is returning me this error:

I have tried all the steps mentioned above, but the error persists.

mfilej

mfilej

Same issue here on the Types GraphQL module (use Absinthe.Schema.Notation).

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