beam/mixRelease: default stripDebug to false due frequent runtime errors (#232107)

This flag appears to cause issues in 3 out 4 users of mixRelease in
Nixpkgs, plus Mobilizon, which isn't merged yet. It might be safer to
set it to fals for now, as the runtime error messages produced by it are
quite cryptic.

pkgs/development/beam-modules/elixir-ls/default.nix

@@ -16,6 +16,8 @@ in
 mixRelease  {
   inherit pname version src elixir;
 
+  stripDebug = true;
+
   mixFodDeps = fetchMixDeps {
     pname = "mix-deps-${pname}";
     inherit src version elixir;

pkgs/development/beam-modules/mix-release.nix

@@ -9,16 +9,25 @@
 , enableDebugInfo ? false
 , mixEnv ? "prod"
 , compileFlags ? [ ]
+
   # mix fixed output derivation dependencies
 , mixFodDeps ? null
+
   # mix dependencies generated by mix2nix
   # this assumes each dependency is built by buildMix or buildRebar3
   # each dependency needs to have a setup hook to add the lib path to $ERL_LIBS
   # this is how mix will find dependencies
 , mixNixDeps ? { }
+
 , elixir ? inputs.elixir
 , hex ? inputs.hex.override { inherit elixir; }
-, stripDebug ? true
+
+# This reduces closure size, but can lead to some hard to understand runtime
+# errors, so use with caution. See e.g.
+# https://github.com/whitfin/cachex/issues/205
+# https://framagit.org/framasoft/mobilizon/-/issues/1169
+, stripDebug ? false
+
 , ...
 }@attrs:
 let

pkgs/servers/akkoma/default.nix

@@ -31,9 +31,6 @@ beamPackages.mixRelease rec {
     mix phx.digest --no-deps-check
   '';
 
-  # cf. https://github.com/whitfin/cachex/issues/205
-  stripDebug = false;
-
   mixNixDeps = import ./mix.nix {
     inherit beamPackages lib;
     overrides = (final: prev: {

pkgs/servers/pleroma/default.nix

@@ -17,7 +17,6 @@ beamPackages.mixRelease rec {
     rev = "v${version}";
     sha256 = "sha256-3iG2s7jVEnhq1kLLgtaHnFmLYBO2Xr5M5jjZfSNA9z4=";
   };
-  stripDebug = false;
 
   mixNixDeps = import ./mix.nix {
     inherit beamPackages lib;

pkgs/servers/web-apps/plausible/default.nix

@@ -49,9 +49,6 @@ beamPackages.mixRelease {
 
   nativeBuildInputs = [ nodejs ];
 
-  # https://github.com/whitfin/cachex/issues/205
-  stripDebug = false;
-
   passthru = {
     tests = { inherit (nixosTests) plausible; };
     updateScript = ./update.sh;