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-rw-r--r--third_party/overlays/patches/evans-add-support-for-unix-domain-sockets.patch39
-rw-r--r--third_party/overlays/tvl.nix8
2 files changed, 47 insertions, 0 deletions
diff --git a/third_party/overlays/patches/evans-add-support-for-unix-domain-sockets.patch b/third_party/overlays/patches/evans-add-support-for-unix-domain-sockets.patch
new file mode 100644
index 000000000000..c66528f53880
--- /dev/null
+++ b/third_party/overlays/patches/evans-add-support-for-unix-domain-sockets.patch
@@ -0,0 +1,39 @@
+From 55d7e7af7c56f678eb817059417241bb61ee5181 Mon Sep 17 00:00:00 2001
+From: Florian Klink <flokli@flokli.de>
+Date: Sun, 8 Oct 2023 11:00:27 +0200
+Subject: [PATCH] add support for unix domain sockets
+
+grpc.NewClient already supports connecting to unix domain sockets, and
+accepts a string anyways.
+
+As a quick fix, detect the `address` starting with `unix://` and don't
+add the port.
+
+In the long term, we might want to deprecate `host` and `port` cmdline
+args in favor of a single `address` arg.
+---
+ mode/common.go | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/mode/common.go b/mode/common.go
+index dfc7839..55f1e36 100644
+--- a/mode/common.go
++++ b/mode/common.go
+@@ -13,7 +13,13 @@ import (
+ )
+ 
+ func newGRPCClient(cfg *config.Config) (grpc.Client, error) {
+-	addr := fmt.Sprintf("%s:%s", cfg.Server.Host, cfg.Server.Port)
++	addr := cfg.Server.Host
++
++	// as long as the address doesn't start with unix, also add the port.
++	if !strings.HasPrefix(cfg.Server.Host, "unix://") {
++		addr = fmt.Sprintf("%s:%s", cfg.Server.Host, cfg.Server.Port)
++	}
++
+ 	if cfg.Request.Web {
+ 		//TODO: remove second arg
+ 		return grpc.NewWebClient(addr, cfg.Server.Reflection, false, "", "", "", grpc.Headers(cfg.Request.Header)), nil
+-- 
+2.42.0
+
diff --git a/third_party/overlays/tvl.nix b/third_party/overlays/tvl.nix
index ec7506ee4107..c88bd4d74176 100644
--- a/third_party/overlays/tvl.nix
+++ b/third_party/overlays/tvl.nix
@@ -125,4 +125,12 @@ depot.nix.readTree.drvTargets {
       outputHash = "sha256-elEIWHxyY3iccprIcbQA6GWFiq/n5kozpGfw/OmoSIg=";
     });
   });
+
+  evans = super.evans.overrideAttrs (old: {
+    patches = old.patches or [ ] ++ [
+      # add support for unix domain sockets
+      # https://github.com/ktr0731/evans/pull/680
+      ./patches/evans-add-support-for-unix-domain-sockets.patch
+    ];
+  });
 }