rewiring of spliced specs (#26873)

* tests for rewiring pure specs to spliced specs

* relocate text, binaries, and links

* using llnl.util.symlink for windows compat.

Note: This does not include CLI hooks for relocation.

Co-authored-by: Nathan Hanford <hanford1@llnl.gov>

var/spack/repos/builtin.mock/packages/splice-h/package.py

@@ -6,7 +6,7 @@
 from spack import *
 
 
-class SpliceH(AutotoolsPackage):
+class SpliceH(Package):
     """Simple package with one optional dependency"""
 
     homepage = "http://www.example.com"
@@ -20,3 +20,8 @@ class SpliceH(AutotoolsPackage):
 
     depends_on('splice-z')
     depends_on('splice-z+foo', when='+foo')
+
+    def install(self, spec, prefix):
+        with open(prefix.join('splice-h'), 'w') as f:
+            f.write('splice-h: {0}'.format(prefix))
+            f.write('splice-z: {0}'.format(spec['splice-z'].prefix))

var/spack/repos/builtin.mock/packages/splice-t/package.py

@@ -6,7 +6,7 @@
 from spack import *
 
 
-class SpliceT(AutotoolsPackage):
+class SpliceT(Package):
     """Simple package with one optional dependency"""
 
     homepage = "http://www.example.com"
@@ -16,3 +16,9 @@ class SpliceT(AutotoolsPackage):
 
     depends_on('splice-h')
     depends_on('splice-z')
+
+    def install(self, spec, prefix):
+        with open(prefix.join('splice-t'), 'w') as f:
+            f.write('splice-t: {0}'.format(prefix))
+            f.write('splice-h: {0}'.format(spec['splice-h'].prefix))
+            f.write('splice-z: {0}'.format(spec['splice-z'].prefix))

var/spack/repos/builtin.mock/packages/splice-z/package.py

@@ -6,7 +6,7 @@
 from spack import *
 
 
-class SpliceZ(AutotoolsPackage):
+class SpliceZ(Package):
     """Simple package with one optional dependency"""
 
     homepage = "http://www.example.com"
@@ -16,3 +16,7 @@ class SpliceZ(AutotoolsPackage):
 
     variant('foo', default=False, description='nope')
     variant('bar', default=False, description='nope')
+
+    def install(self, spec, prefix):
+        with open(prefix.join('splice-z'), 'w') as f:
+            f.write('splice-z: {0}'.format(prefix))