@@ 1366,6 1366,40 @@ objects.")
;; safe side, we drop them for now.
(license license:gpl2+)))
+(define-public spectra
+ (package
+ (name "spectra")
+ (version "1.0.1")
+ (source (origin
+ (method git-fetch)
+ (uri (git-reference
+ (url "https://github.com/yixuan/spectra")
+ (commit (string-append "v" version))))
+ (file-name (git-file-name name version))
+ (sha256
+ (base32
+ "1krgx7763g0phrp879rgq10dvfyxrdx9rzwxiyzn6qi3iqr6d8hx"))))
+ (build-system cmake-build-system)
+ (arguments
+ (list #:configure-flags #~(list "-DBUILD_TESTS=ON")
+ #:phases
+ #~(modify-phases %standard-phases
+ (replace 'check
+ (lambda* (#:key tests? #:allow-other-keys)
+ (when tests?
+ ;; This test failed.
+ (invoke "ctest" "--exclude-regex"
+ "GenEigsRealShift")))))))
+ (inputs (list eigen))
+ (home-page "https://spectralib.org/")
+ (synopsis "C++ library for large scale eigenvalue problems")
+ (description "Spectra stands for Sparse Eigenvalue Computation Toolkit as
+a Redesigned ARPACK. It is a C++ library for large scale eigenvalue problems,
+built on top of Eigen. It is implemented as a header-only C++ library and can
+be easily embedded in C++ projects that require calculating eigenvalues of
+large matrices.")
+ (license license:mpl2.0)))
+
(define-public gappa
(package
(name "gappa")