Subject: [PATCH electronics-team v2] gnu: Add prjtrellis.

From: Cayetano Santos <[email-masked]>
Date: Fri, 2 May 2025 20:47:57 +0200

* gnu/packages/electronics.scm (prjtrellis): New variable.

Change-Id: Iac188df00f55c06f9000fe1b688d6cded9d495fd
---
 gnu/packages/electronics.scm | 59 ++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/gnu/packages/electronics.scm b/gnu/packages/electronics.scm
index d63511ff22..01a9f68f52 100644
--- a/gnu/packages/electronics.scm
+++ b/gnu/packages/electronics.scm
@@ -422,6 +422,65 @@ (define-public openboardview
 @end itemize")
     (license license:expat)))
 
+(define-public prjtrellis
+  (package
+    (name "prjtrellis")
+    (version "1.4")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/YosysHQ/prjtrellis/")
+             (commit version)
+             ;; pulls the bitstream db for ECP5 devices; this is useful only by
+             ;; prjtrellis, there is no need to package it separately
+             (recursive? #t)))
+       (file-name (git-file-name name version))
+       (modules '((guix build utils)))
+       (snippet
+        ;; Remove bundled source code for which Guix has packages.
+        '(with-directory-excursion "libtrellis/3rdparty"
+           (for-each delete-file-recursively
+                     '("pybind11"))))
+       (sha256
+        (base32 "0c3asdfrjmnc6q3vawn3nfghgg43iajwy2zb8kck9d3wrypbhlmc"))))
+    (build-system cmake-build-system)
+    (arguments
+     (list
+      ;; the examples test directory requires nextpnr, using this package as a
+      ;; backend, which is provided by nextpnr-ecp5; the tests are to be run in
+      ;; there then
+      #:tests? #f
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'chdir
+            (lambda _
+              (chdir "libtrellis")))
+          ;; point to pybind11 include dir
+          (add-after 'chdir 'setenv-pybind11
+            (lambda* (#:key inputs #:allow-other-keys)
+              (setenv "PYBIND11_INCLUDE_DIR"
+                      (string-append #$(this-package-input "pybind11")
+                                     "/include/pybind11")))))))
+    (native-inputs (list python))
+    (inputs (list openocd boost pybind11))
+    (synopsis "Placement and routing for ECP5 FPGAs")
+    (description
+     "Project Trellis is a Nextpnr backend compatible with ECP5 FPGAs.
+The following features are currently available:
+@table @command
+@item logic slice functionality, including carries
+@item distributed RAM inside logic slices
+@item all internal interconnect
+@item basic IO, including tristate
+@item block RAM, using inference or manual instantiation
+@item multipliers using manual instantiation
+@item global networks and PLLs
+@item transcievers (DCUs)
+@end table")
+    (home-page "https://github.com/YosysHQ/prjtrellis/")
+    (license license:expat)))
+
 (define-public opensta
   ;; There are no releases, we use last commit.
   (let ((commit "eb8d39a7dd81b5ca2582ad9bbce0fb6e094b3e0f")

base-commit: 0b83a27b67ae92e988795322ae988518ec3e6972
--
2.49.0