@@ -74,6 +74,69 @@ (define-module (gnu packages cpp)
#:use-module (gnu packages web)
#:use-module (gnu packages xml))
+(define-public json
+ (package
+ (name "json")
+ (version "3.10.4")
+ (source
+ (origin
+ (method git-fetch)
+ (uri
+ (git-reference
+ (url "https://github.com/nlohmann/json")
+ (commit (string-append "v" version))))
+ (file-name (git-file-name name version))
+ (sha256
+ (base32 "17kxwxl6515s8nb5x7zy69c8qy4gswac66fp15261x1g6sa2jnkx"))
+ (modules '((guix build utils)
+ (ice-9 ftw)
+ (srfi srfi-1)))
+ (snippet
+ `(begin
+ (delete-file-recursively "third_party")
+ (let ((keep
+ ;; Custom forks which are incompatible with the ones in Guix.
+ '("doctest" "fifo_map")))
+ (with-directory-excursion "test/thirdparty"
+ (for-each delete-file-recursively
+ (lset-difference string=?
+ (scandir ".")
+ (cons* "." ".." keep)))))
+ #t))))
+ (build-system cmake-build-system)
+ (arguments
+ `(#:configure-flags
+ (list
+ (string-append "-DJSON_TestDataDirectory="
+ (assoc-ref %build-inputs "json_test_data")))
+ #:phases
+ (modify-phases %standard-phases
+ (add-after 'unpack 'disable-failing-tests
+ (lambda _
+ (substitute* "test/CMakeLists.txt"
+ ;; Requires network connection.
+ (("add_subdirectory\\(cmake_fetch_content\\)") "")))))))
+ (native-inputs
+ `(("json_test_data"
+ ,(origin
+ (method git-fetch)
+ (uri
+ (git-reference
+ (url "https://github.com/nlohmann/json_test_data")
+ (commit "v3.0.0")))
+ (file-name
+ (git-file-name "json_test_data" "3.0.0"))
+ (sha256
+ (base32 "0nzsjzlvk14dazwh7k2jb1dinb0pv9jbx5jsyn264wvva0y7daiv"))))
+ ("python" ,python-wrapper)))
+ (home-page "https://json.nlohmann.me/")
+ (synopsis "JSON for C++")
+ (description "@code{json} is a C++ json library for converting to and from
+C++ data structures. It's design goals emphasize intuitive syntax, trivial
+integration via a single header file, and serious test coverage involving all of
+the codebase.")
+ (license license:expat)))
+
(define-public argagg
(let ((commit "79e4adfa2c6e2bfbe63da05cc668eb9ad5596748")
(revision "0"))