diff --git a/build/scver.mk b/build/scver.mk
index bdae8be..7539864 100644
--- a/build/scver.mk
+++ b/build/scver.mk
@@ -98,33 +98,10 @@ endif
 GITPRESENT := $(wildcard $(FDBDIR)/.git)
 HGPRESENT := $(wildcard $(FDBDIR)/.hg)
 
-# Use Git, if not missing
-ifneq ($(GITPRESENT),)
-	SCVER := $(shell cd "$(FDBDIR)" && git --version 2>/dev/null)
-	ifneq ($(SCVER),)
-		VERSION_ID := $(shell cd "$(FDBDIR)" && git rev-parse --verify HEAD)
-		SOURCE_CONTROL := GIT
-		SCBRANCH := $(shell cd "$(FDBDIR)" && git rev-parse --abbrev-ref HEAD)
-	else
-$(error Missing git executable on $(PLATFORM) )
-	endif
-# Otherwise, use Mercurial
-else
-	# Otherwise, use Mercurial, if not missing
-	ifneq ($(HGPRESENT),)
-		SCVER := $(shell cd "$(FDBDIR)" && hg --version 2>/dev/null)
-		ifdef SCVER
-			VERSION_ID := $(shell cd "$(FDBDIR)" && hg id -n)
-			SOURCE_CONTROL := MERCURIAL
-			SCBRANCH := $(shell cd "$(FDBDIR)" && hg branch)
-		else
-$(error Missing hg executable on $(PLATFORM))
-		endif
-	else
-	FDBFILES := (shell ls -la $(FDBDIR))
-$(error Missing source control information for source on $(PLATFORM) in directory: $(FDBDIR) with files: $(FDBFILES))
-	endif
-endif
+# NixOS-specific non-VCS packaging, filled out by the nix build
+SOURCE_CONTROL := GIT
+VERSION_ID     := @NIXOS_FDB_VERSION_ID@
+SCBRANCH       := @NIXOS_FDB_SCBRANCH@
 
 # Set the RELEASE variable based on the KVRELEASE variable.
 ifeq ($(KVRELEASE),1)