gnu: Add lean4.

* gnu/packages/lean.scm (lean4): New variable.

Change-Id: I9f51b7475eabdecd98fb05378a2cf91ed516c5ed

1 files changed, 86 insertions, 0 deletions

diff --git a/gnu/packages/lean.scm b/gnu/packages/lean.scm
index 1533200426..82bca77dd7 100644
--- a/gnu/packages/lean.scm
+++ b/gnu/packages/lean.scm
@@ -21,7 +21,11 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages lean)
+  #:use-module (ice-9 match)
+  #:use-module (gnu packages base)
   #:use-module (gnu packages bash)
+  #:use-module (gnu packages llvm)
+  #:use-module (gnu packages maths)
   #:use-module (gnu packages multiprecision)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system python)
@@ -31,7 +35,11 @@
   #:use-module (guix git-download)
   #:use-module (guix download)
   #:use-module (gnu packages graphviz)
+  #:use-module (gnu packages libevent)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages version-control)
+  #:use-module (gnu packages python)
   #:use-module (gnu packages python-build)
   #:use-module (gnu packages python-crypto)
   #:use-module (gnu packages python-web)
@@ -75,6 +83,84 @@ core based on dependent typed theory, aiming to bridge the gap between
 interactive and automated theorem proving.")
     (license license:asl2.0)))
 
+(define-public lean4
+  (package
+    (name "lean4")
+    (version "4.17.0")
+    (home-page "https://lean-lang.org" )
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/leanprover/lean4.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0fmjp8hqsbppn1fqzr8lyh6fhk8vhfj1m18wlmsfk1can00mx2za"))))
+    (build-system cmake-build-system)
+    (native-inputs
+     (list git ; for the tests
+           perl ; for the tests
+           pkg-config
+           python-wrapper
+           tzdata-for-tests))
+    (inputs
+     (list cadical gmp libuv llvm))
+    (arguments
+     (list
+      #:make-flags
+      #~(list "SHELL=bash -euo pipefail")
+      #:build-type "Release"            ; default upstream build type
+      ;; XXX: Test phases currently fail on 32-bit sytems.
+      ;; Tests for those architectures have been temporarily
+      ;; disabled, pending further investigation.
+      #:tests? (and (not (%current-target-system))
+                    (let ((arch (%current-system)))
+                      (not (or (string-prefix? "i686" arch)
+                               (string-prefix? "armhf" arch)))))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-before 'configure 'patch
+            (lambda _
+              (substitute* '("stage0/src/CMakeLists.txt"
+                             "src/CMakeLists.txt")
+               ;; Convert clang option to GCC option.
+               (("--print-target-triple") "-dumpmachine")) ; -print-multiarch
+              (substitute* '("src/bin/leanc.in"
+                             "src/util/ffi.cpp"
+                             "stage0/src/bin/leanc.in"
+                             "stage0/src/util/ffi.cpp")
+               ;; Prevent ld error from:
+               ;; "--start-group" "-lInit" "-lleanrt" "--end-group" "-lstdc++"
+               ;; "-lLake" ""
+               ((" @LEAN_EXTRA_LINKER_FLAGS@")
+                "@LEAN_EXTRA_LINKER_FLAGS@"))
+              (substitute* "src/lean.mk.in"
+               (("SHELL = /usr/bin/env bash")
+                "SHELL = bash"))
+              (setenv "SHELL" "bash -euo pipefail")))
+          (replace 'check
+            (lambda* (#:key tests? parallel-tests? #:allow-other-keys)
+              (when tests?
+                (with-directory-excursion "../source"
+                  (invoke "ctest" "--preset" "release" "--test-dir" "../build/stage1"
+                          "-E" "leancomptest_(doc_example|foreign)|leanlaketest_reverse-ffi|leanruntest_timeIO"
+                          "-j" (if parallel-tests?
+                                   (number->string (parallel-job-count))
+                                   "1"))))))
+          (add-before 'install 'delete-junk
+            (lambda _
+              ;; Package is reproducible with ".git" deleted.
+              (for-each delete-file-recursively
+               (find-files "../source/src/lake/tests" "^\\.git$"
+                           #:directories? #t)))))))
+    (synopsis "Theorem prover and programming language")
+    (description
+     "Lean is a theorem prover and programming language with a small trusted
+core based on dependent typed theory, aiming to bridge the gap between
+interactive and automated theorem proving.")
+    (license license:asl2.0)))
+
 (define-public python-mathlibtools
   (package
     (name "python-mathlibtools")