CargoPackage: add new build system for Cargo packages (#41192)

Co-authored-by: Tom Scogland <scogland1@llnl.gov>

3 files changed, 37 insertions, 10 deletions

diff --git a/var/spack/repos/builtin/packages/exa/package.py b/var/spack/repos/builtin/packages/exa/package.py
index 8488f3b3a1..21be99414a 100644
--- a/var/spack/repos/builtin/packages/exa/package.py
+++ b/var/spack/repos/builtin/packages/exa/package.py
@@ -6,17 +6,22 @@
 from spack.package import *
 
 
-class Exa(Package):
-    """exa is a replacement for ls written in Rust."""
+class Exa(CargoPackage):
+    """DEPRECATED: The exa upstream is no longer maintained, see the eza package for a
+    replacement.
+
+    exa is a replacement for ls written in Rust."""
 
     homepage = "https://the.exa.website"
     url = "https://github.com/ogham/exa/archive/v0.9.0.tar.gz"
 
-    version("0.10.1", sha256="ff0fa0bfc4edef8bdbbb3cabe6fdbd5481a71abbbcc2159f402dea515353ae7c")
-    version("0.9.0", sha256="96e743ffac0512a278de9ca3277183536ee8b691a46ff200ec27e28108fef783")
-
-    depends_on("rust")
-
-    def install(self, spec, prefix):
-        cargo = which("cargo")
-        cargo("install", "--root", prefix, "--path", ".")
+    version(
+        "0.10.1",
+        sha256="ff0fa0bfc4edef8bdbbb3cabe6fdbd5481a71abbbcc2159f402dea515353ae7c",
+        deprecated=True,
+    )
+    version(
+        "0.9.0",
+        sha256="96e743ffac0512a278de9ca3277183536ee8b691a46ff200ec27e28108fef783",
+        deprecated=True,
+    )
diff --git a/var/spack/repos/builtin/packages/eza/package.py b/var/spack/repos/builtin/packages/eza/package.py
new file mode 100644
index 0000000000..df9dd5aa8b
--- /dev/null
+++ b/var/spack/repos/builtin/packages/eza/package.py
@@ -0,0 +1,19 @@
+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class Eza(CargoPackage):
+    """A modern, maintained replacement for ls."""
+
+    homepage = "https://github.com/eza-community/eza"
+    url = "https://github.com/eza-community/eza/archive/refs/tags/v0.15.3.tar.gz"
+
+    maintainers("trws")
+
+    license("MIT")
+
+    version("0.15.3", sha256="09093e565913104acb7a8eba974f8067c95566b6fbedf31138c9923a8cfde42f")
diff --git a/var/spack/repos/builtin/packages/rust/package.py b/var/spack/repos/builtin/packages/rust/package.py
index 8d0784d95a..a9b7a7530f 100644
--- a/var/spack/repos/builtin/packages/rust/package.py
+++ b/var/spack/repos/builtin/packages/rust/package.py
@@ -89,6 +89,9 @@ class Rust(Package):
         match = re.match(r"rustc (\S+)", output)
         return match.group(1) if match else None
 
+    def setup_dependent_package(self, module, dependent_spec):
+        module.cargo = Executable(os.path.join(self.spec.prefix.bin, "cargo"))
+
     def setup_build_environment(self, env):
         # Manually inject the path of ar for build.
         ar = which("ar", required=True)