Merge pull request #1050 from appsignal/remove-dead-gc-instrumentation-config

Remove dead GC instrumentation env var

Author: unflxw

lib/appsignal/config.ex

@@ -350,7 +350,7 @@ defmodule Appsignal.Config do
   )
   @bool_keys ~w(
     APPSIGNAL_ACTIVE APPSIGNAL_DEBUG APPSIGNAL_INSTRUMENT_NET_HTTP APPSIGNAL_ENABLE_FRONTEND_ERROR_CATCHING
-    APPSIGNAL_ENABLE_GC_INSTRUMENTATION APPSIGNAL_RUNNING_IN_CONTAINER
+    APPSIGNAL_RUNNING_IN_CONTAINER
     APPSIGNAL_ENABLE_HOST_METRICS APPSIGNAL_SEND_SESSION_DATA APPSIGNAL_SKIP_SESSION_DATA
     APPSIGNAL_TRANSACTION_DEBUG_MODE APPSIGNAL_FILES_WORLD_ACCESSIBLE APPSIGNAL_SEND_PARAMS
     APPSIGNAL_ENABLE_MINUTELY_PROBES APPSIGNAL_ENABLE_STATSD APPSIGNAL_ENABLE_NGINX_METRICS

mix.exs

@@ -148,8 +148,15 @@ defmodule Appsignal.Mixfile do
 
         _ ->
           case Version.compare(system_version, "1.14.0") do
-            :lt -> "~> 1.14 and < 1.19.0"
-            _ -> "~> 1.14"
+            :lt ->
+              "~> 1.14 and < 1.19.0"
+
+            _ ->
+              # plug 1.20.0 requires Elixir ~> 1.15, so cap it on 1.14.
+              case Version.compare(system_version, "1.15.0") do
+                :lt -> "~> 1.14 and < 1.20.0"
+                _ -> "~> 1.14"
+              end
           end
       end
 
@@ -165,6 +172,14 @@ defmodule Appsignal.Mixfile do
         _ -> [{:logger_backends, "~> 1.0"}]
       end
 
+    # hpax is a transitive dependency (via finch/mint). Version 1.0.4 requires
+    # Elixir ~> 1.15, so pin to the last compatible version on older Elixirs.
+    hpax_dependency =
+      case Version.compare(system_version, "1.15.0") do
+        :lt -> [{:hpax, ">= 1.0.0 and < 1.0.4", override: true}]
+        _ -> []
+      end
+
     [
       {:castore, "~> 1.0"},
       {:certifi, "~> 2.14"},
@@ -181,6 +196,6 @@ defmodule Appsignal.Mixfile do
       {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
       {:telemetry, telemetry_version},
       {:httpoison, "~> 2.0", optional: true}
-    ] ++ mime_dependency ++ logger_backends_dependency
+    ] ++ mime_dependency ++ logger_backends_dependency ++ hpax_dependency
   end
 end