[bug#58310] [PATCH 04/14] gnu: Add python-hatchling-bootstrap.

[Garek Dyszel via Guix-patches via <guix-patches@gnu.org>]

* gnu/packages/python-build.scm (python-hatchling-bootstrap): New variable.
---
 gnu/packages/python-build.scm | 63 +++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/gnu/packages/python-build.scm b/gnu/packages/python-build.scm
index e17cde16d9..f90d23874f 100644
--- a/gnu/packages/python-build.scm
+++ b/gnu/packages/python-build.scm
@@ -516,3 +516,66 @@ (define-public python-editables
 ``editable mode''.  In other words, changes to the package source will be
 reflected in the package visible to Python, without needing a reinstall.")
     (license license:expat)))
+
+;; This depends on packages in python-xyz.scm:
+;; python-version, python-importlib-metadata, python-pathspec,
+;; python-pluggy-1.0, and python-platformdirs.
+(define-public python-hatchling-bootstrap
+  (package
+    (name "python-hatchling-bootstrap")
+    (version "1.10.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/pypa/hatch")
+                    (commit (string-append "hatchling-v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                ;;"1q25kqw71g8mjwfjz9ph0iigdqa26zzxgmqm0v0bp0z1j8rcl237"
+                "1yqkwck2aihfdm9ljv5q4nygmmqyp35xwyp8lqn2f4vq9p6njq3c"))))
+    ;; python-pypa-build needed for bootstrapping.
+    ;; Otherwise we get a circular reference:
+    ;; python-hatchling trying to build itself, without
+    ;; first having hatchling installed.
+    (inputs (list python-pypa-build
+                  python-editables
+                  python-importlib-metadata
+                  python-version
+                  python-packaging-next
+                  python-pathspec
+                  python-pluggy-1.0 ;TODO: Not detected by pytest?
+                  python-tomli
+                  python-platformdirs))
+    (build-system python-build-system)
+    (arguments
+     `( ;Tests depend on module python-hatch, which this
+       ;; is bootstrapping.
+       #:tests? #f
+       #:phases (modify-phases %standard-phases
+                  (replace 'build
+                    (lambda _
+                      (chdir "backend")
+                      ;; ZIP does not support timestamps before 1980.
+                      (setenv "SOURCE_DATE_EPOCH" "315532800")
+                      (invoke "python"
+                              "-m"
+                              "build"
+                              "--wheel"
+                              "--no-isolation"
+                              ".")))
+                  (replace 'install
+                    (lambda* (#:key outputs #:allow-other-keys)
+                      (let ((whl (car (find-files "dist" "\\.whl$"))))
+                        (invoke "pip"
+                                "--no-cache-dir"
+                                "--no-input"
+                                "install"
+                                "--no-deps"
+                                "--prefix"
+                                (assoc-ref %outputs "out")
+                                whl)))))))
+    (home-page "https://ofek.dev/projects/hatch/")
+    (synopsis "Bootstrap binaries to build @code{python-hatch}")
+    (description "Bootstrap binaries to build @code{python-hatch}")
+    (license license:expat)))
-- 
2.37.3