p7zip: Add new versions from fork (#35627)

var/spack/repos/builtin/packages/p7zip/package.py

@@ -12,13 +12,14 @@ class P7zip(MakefilePackage):
 
     maintainers("vmiheer")
     homepage = "http://p7zip.sourceforge.net"
-    url = "https://downloads.sourceforge.net/project/p7zip/p7zip/16.02/p7zip_16.02_src_all.tar.bz2"
 
+    version("17.05", sha256="9473e324de6a87d89cb7ff65b0fec4ae3f147f03ffc138189c336a4650d74804")
+    version("17.04", sha256="ea029a2e21d2d6ad0a156f6679bd66836204aa78148a4c5e498fe682e77127ef")
     version("16.02", sha256="5eb20ac0e2944f6cb9c2d51dd6c4518941c185347d4089ea89087ffdd6e2341f")
 
     patch(
         "gcc10.patch",
-        when="%gcc@10:",
+        when="@16.02%gcc@10:",
         sha256="96914025b9f431fdd75ae69768162d57751413634622f9df1a4bc4960e7e8fe1",
     )
 
@@ -27,7 +28,7 @@ class P7zip(MakefilePackage):
     # forbidden by C++17, the default standard targeted by GCC 11.
     patch(
         "gcc11.patch",
-        when="%gcc@11:",
+        when="@16.02%gcc@11:",
         sha256="39dd15f2dfc86eeee8c3a13ffde65c2ca919433cfe97ea126fbdc016afc587d1",
     )
 
@@ -36,6 +37,17 @@ class P7zip(MakefilePackage):
 
     depends_on("yasm", type="build", when="%clang")
 
+    # Old package is abandoned, newer versions come from a fork
+    def url_for_version(self, version):
+        if version >= Version("17"):
+            return "https://github.com/p7zip-project/p7zip/archive/refs/tags/v{0}.tar.gz".format(
+                version
+            )
+        else:
+            return "https://downloads.sourceforge.net/project/p7zip/p7zip/{0}/p7zip_{0}_src_all.tar.bz2".format(
+                version
+            )
+
     def edit(self, spec, prefix):
         # Use the suggested makefile
         for tgt, makefile in {