Subject: [bug#65806] [PATCH 3/4] gnu: Add pdf-crop-margins.

From: Nicolas Graves <[email-masked]>
Date: Fri, 8 Sep 2023 01:32:12 +0200

* gnu/packages/pdf.scm (pdf-crop-margins): New variable.
---
 gnu/packages/pdf.scm | 57 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/gnu/packages/pdf.scm b/gnu/packages/pdf.scm
index 30cc325d48..2266296621 100644
--- a/gnu/packages/pdf.scm
+++ b/gnu/packages/pdf.scm
@@ -964,6 +964,63 @@ (define-public python-pymupdf
 analysis, conversion & manipulation of PDF (and other) documents.")
     (license license:agpl3+)))
 
+(define-public pdf-crop-margins
+  (let ((commit "6d89093e33e98ab02196cfc5e06e96003771e735")
+        (revision "0"))
+    (package
+      (name "pdf-crop-margins")
+      (version "2.0.3")
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/abarker/pdfCropMargins")
+               ;; Releases are not in git tags.
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "0144px9kl927z6gx380i2sd75izqzxnnzl3laih2dwpqp82r9j6f"))))
+      (build-system pyproject-build-system)
+      (arguments
+       (list
+        #:phases
+        #~(modify-phases %standard-phases
+            (add-after 'unpack 'lift-requirements
+              (lambda _
+                (substitute* "setup.py"
+                  (("pillow>=9\\.3\\.0")  ; security issues handled by a patch
+                   "pillow>=9.2.0")))))))
+      (native-inputs (list python-setuptools
+                           python-pillow))
+      (propagated-inputs (list ghostscript
+                               python-pymupdf
+                               python-pysimplegui))
+      (home-page "https://github.com/abarker/pdfCropMargins")
+      (synopsis "Automatically crop the margins of PDF files")
+      (description "The pdfCropMargins program is a command-line application to
+automatically crop the margins of PDF files.  Cropping the margins can make it
+easier to read the pages of a PDF document -- whether the document is printed
+or displayed on a screen -- because the display fonts are larger.
+
+Features
+@itemize
+@item Automatically detects the margins and can crop a given percentage of them.
+@item Can crop all the pages to the same size to give a uniform appearance.
+@item Renders and analyzes page images to find the bounding boxes, which allows
+it to deal with noisy scanned PDFs.
+@item A rudimentary 'undo' capability is implemented by default.
+@item Can crop pages uniformly based on the nth smallest crop values, to help
+with noisy documents where a few pages have unwanted markings in their margins.
+@item Can automatically run a document previewer on the output file.
+@item The format of automatically-generated output-file names is modifiable.
+@item Preserves document catalog information such as outlines if possible.
+@item Crops rotated pages according to their appearance in the document viewer.
+@item Can deal with at least simple cases of password-encrypted files.
+@item Can automatically apply a Ghostscript repair operation to attempt to fix
+corrupt PDF files.
+@end itemize")
+      (license license:gpl3+))))
+
 (define-public qpdf
   (package
     (name "qpdf")
-- 
2.41.0