fish: relax ncurses dependency constraints (#18796)

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

@@ -23,7 +23,7 @@ class Fish(CMakePackage):
 
     # https://github.com/fish-shell/fish-shell#dependencies-1
     depends_on('cmake@3.2:', type='build')
-    depends_on('ncurses~termlib')
+    depends_on('ncurses')
     depends_on('pcre2@10.21:')
     depends_on('gettext')
     depends_on('py-sphinx', when='+docs', type='build')
@@ -41,6 +41,9 @@ def determine_version(cls, exe):
         match = re.search(r'fish, version (\S+)', output)
         return match.group(1) if match else None
 
+    def setup_build_environment(self, env):
+        env.append_flags('LDFLAGS', self.spec['ncurses'].libs.link_flags)
+
     def cmake_args(self):
         args = [
             '-DBUILD_SHARED_LIBS=ON',