thanos: pin to Go 1.19

It panics when running with Go 1.20 with the following error:

```
panic: Something in this program imports go4.org/unsafe/assume-no-moving-gc
to declare that it assumes a non-moving garbage collector,
but your version of go4.org/unsafe/assume-no-moving-gc hasn't been updated
to assert that it's safe against the go1.20 runtime.
If you want to risk it, run with environment variable
ASSUME_NO_MOVING_GC_UNSAFE_RISK_IT_WITH=go1.20 set.
Notably, if go1.20 adds a moving garbage collector,
this program is unsafe to use.
```

2 files changed, 6 insertions, 2 deletions

diff --git a/pkgs/servers/monitoring/thanos/default.nix b/pkgs/servers/monitoring/thanos/default.nix
index 76c8996dd7f..240b77168d3 100644
--- a/pkgs/servers/monitoring/thanos/default.nix
+++ b/pkgs/servers/monitoring/thanos/default.nix
@@ -12,7 +12,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-bNQwDttJ7YuQFrpp0alqe37/lue0CX5gB2UDRWWtTXQ=";
 
-  doCheck = false;
+  doCheck = true;
 
   subPackages = "cmd/thanos";
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c57fe2eef51..1b3046329c6 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -26096,7 +26096,11 @@ with pkgs;
 
   tailspin = callPackage ../tools/misc/tailspin { };
 
-  thanos = callPackage ../servers/monitoring/thanos { };
+  thanos = callPackage ../servers/monitoring/thanos {
+    # Fails to run with go1.20 due to go4.org/unsafe/assume-no-moving-gc not being
+    # update to be compatible with Go 1.20
+    buildGoModule = buildGo119Module;
+  };
 
   trafficserver = callPackage ../servers/http/trafficserver { };