Make libxml2-7 provide libxml2 (chainguard-images#1519)

This confuses our solver logic.

Signed-off-by: Jon Johnson <[email protected]>

Makefile

@@ -99,9 +99,9 @@ endef
 define get-source-dir
 	$(info getting source dir for package $(3) with dir $(2))
 	$(1) := $(shell if [[ "." == "$(2)" ]]; then \
-		echo "--source-dir ./$(3)"; \
+		mdkir -p "./$(3)" && echo "--source-dir ./$(3)"; \
 	else \
-		echo "--source-dir $(2)"; \
+		mkdir -p "$(2)" && echo "--source-dir $(2)"; \
 	fi)
 endef
 

libxml2-7.yaml

@@ -5,6 +5,9 @@ package:
   description: XML parsing library, version 2.7
   copyright:
     - license: MIT
+  dependencies:
+    provides:
+      - libxml2=${{package.full-version}}
 
 environment:
   contents: