diff --git a/pkgs/development/tools/omnisharp-roslyn/deps.nix b/pkgs/by-name/om/omnisharp-roslyn/deps.nix
similarity index 100%
rename from pkgs/development/tools/omnisharp-roslyn/deps.nix
rename to pkgs/by-name/om/omnisharp-roslyn/deps.nix
diff --git a/pkgs/development/tools/omnisharp-roslyn/default.nix b/pkgs/by-name/om/omnisharp-roslyn/package.nix
similarity index 100%
rename from pkgs/development/tools/omnisharp-roslyn/default.nix
rename to pkgs/by-name/om/omnisharp-roslyn/package.nix
diff --git a/pkgs/development/tools/omnisharp-roslyn/updater.sh b/pkgs/by-name/om/omnisharp-roslyn/updater.sh
similarity index 89%
rename from pkgs/development/tools/omnisharp-roslyn/updater.sh
rename to pkgs/by-name/om/omnisharp-roslyn/updater.sh
index 10868fbd0992..74980c3d57ef 100755
--- a/pkgs/development/tools/omnisharp-roslyn/updater.sh
+++ b/pkgs/by-name/om/omnisharp-roslyn/updater.sh
@@ -7,7 +7,7 @@ set -euo pipefail
 cd "$(dirname "${BASH_SOURCE[0]}")"
 
 new_version="$(curl -s "https://api.github.com/repos/OmniSharp/omnisharp-roslyn/releases?per_page=1" | jq -r '.[0].name')"
-old_version="$(sed -nE 's/\s*version = "(.*)".*/\1/p' ./default.nix)"
+old_version="$(sed -nE 's/\s*version = "(.*)".*/\1/p' ./package.nix)"
 
 if [[ "$new_version" == "$old_version" ]]; then
   echo "Already up to date!"
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 72a2be0f2dff..ec873e088491 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -39018,8 +39018,6 @@ with pkgs;
     nanoizeNewlib = true;
   };
 
-  omnisharp-roslyn = callPackage ../development/tools/omnisharp-roslyn { };
-
   wasmtime = callPackage ../development/interpreters/wasmtime {
     inherit (darwin.apple_sdk.frameworks) Security;
   };