typos: fix some typos

2 files changed, 4 insertions, 4 deletions

diff --git a/lib/spack/spack/package.py b/lib/spack/spack/package.py
index 74008c4dd9..f44b235890 100644
--- a/lib/spack/spack/package.py
+++ b/lib/spack/spack/package.py
@@ -644,10 +644,10 @@ class Package(object):
         for name in sorted(self.dependencies.keys()):
             spec = self.dependencies[name]
 
-            # currently, we do not descend into virtual dependencies, as this
+            # Currently, we do not descend into virtual dependencies, as this
             # makes doing a sensible traversal much harder.  We just assume
             # that ANY of the virtual deps will work, which might not be true
-            # (due to conflicts or unsatisfiable specs).  For now this is ok
+            # (due to conflicts or unsatisfiable specs).  For now this is ok,
             # but we might want to reinvestigate if we start using a lot of
             # complicated virtual dependencies
             # TODO: reinvestigate this.
@@ -1270,7 +1270,7 @@ class Package(object):
                                   (self.name, self.extendee.name))
 
     def do_activate(self, force=False):
-        """Called on an etension to invoke the extendee's activate method.
+        """Called on an extension to invoke the extendee's activate method.
 
         Commands should call this routine, and should not call
         activate() directly.
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index 77bc57147d..f55dad3c51 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -1790,7 +1790,7 @@ class Spec(object):
         raise KeyError("No spec with name %s in %s" % (name, self))
 
     def __contains__(self, spec):
-        """True if this spec satisfis the provided spec, or if any dependency
+        """True if this spec satisfies the provided spec, or if any dependency
            does.  If the spec has no name, then we parse this one first.
         """
         spec = self._autospec(spec)