https://gitlab.com/pdftools/pdfposter/-/issues/21
https://gitlab.com/pdftools/pdfposter/-/issues/23
https://gitlab.com/pdftools/pdfposter/-/merge_requests/7
--- dev-requirements.txt.orig	2022-11-04 13:06:05.000000000 -0500
+++ dev-requirements.txt	2024-03-14 17:14:14.000000000 -0500
@@ -2,7 +2,7 @@
 setuptools
 wheel
 
-PyPDF2
+pypdf
 
 # for testing
 reportlab
--- pdftools/pdfposter/__init__.py.orig	2022-11-04 13:06:05.000000000 -0500
+++ pdftools/pdfposter/__init__.py	2024-03-14 17:14:14.000000000 -0500
@@ -24,9 +24,9 @@
 __license__ = "SPDX-License-Identifier: GPL-3.0-or-later"
 __version__ = "0.8.1"
 
-from PyPDF2 import PdfWriter, PdfReader, PageObject
-from PyPDF2.types import NameObject
-from PyPDF2.generic import ContentStream, RectangleObject, IndirectObject
+from pypdf import PdfWriter, PdfReader, PageObject
+from pypdf.types import NameObject
+from pypdf.generic import ContentStream, RectangleObject, IndirectObject
 
 import logging
 from logging import log
--- pdftools/pdfposter/cmd.py.orig	2022-11-04 13:06:05.000000000 -0500
+++ pdftools/pdfposter/cmd.py	2024-03-14 17:17:14.000000000 -0500
@@ -27,7 +27,7 @@
 
 from . import main, __version__, DEFAULT_MEDIASIZE, papersizes, DecryptionError
 import re
-import PyPDF2.errors
+import pypdf.errors
 import argparse
 
 # pattern for parsing user textual box spec
@@ -192,7 +192,7 @@
         main(args, infilename=args.infilename, outfilename=args.outfilename)
     except DecryptionError as e:
         raise SystemExit(str(e))
-    except PyPDF2.errors.PdfReadError as e:
+    except pypdf.errors.PdfReadError as e:
         parser.error('The input-file is either currupt or no PDF at all: %s'
                      % e)
 
--- setup.cfg.orig	2022-11-04 13:06:05.000000000 -0500
+++ setup.cfg	2024-03-14 17:14:14.000000000 -0500
@@ -57,7 +57,7 @@
 include_package_data = True
 zip_safe = True
 install_requires =
-  PyPDF2 >= 2.1.1, < 3
+  pypdf >= 3.0
 
 [options.entry_points]
 console_scripts =
--- test/functional/test_end_to_end.py.orig	2022-11-04 13:06:05.000000000 -0500
+++ test/functional/test_end_to_end.py	2024-03-14 17:17:56.000000000 -0500
@@ -19,13 +19,13 @@
 import os, sys
 
 from pdftools.pdfposter import cmd
-import PyPDF2
+import pypdf
 
 CHESSBOARD = os.path.join(os.path.dirname(__file__), '..', 'chessboard.pdf')
 
 def get_num_pages(filename):
     with open(filename, 'rb') as fh:
-        reader = PyPDF2.PdfReader(fh)
+        reader = pypdf.PdfReader(fh)
         return len(reader.pages)
 
 def test_without_options(tmpdir):
--- test/gen-allboxespage.py.orig	2022-11-04 13:06:05.000000000 -0500
+++ test/gen-allboxespage.py	2024-03-14 17:14:14.000000000 -0500
@@ -37,8 +37,8 @@
 from reportlab.lib.pagesizes import A4, legal, landscape
 from reportlab.pdfgen.canvas import Canvas
 
-from PyPDF2 import PdfFileWriter, PdfFileReader
-from PyPDF2.generic import RectangleObject
+from pypdf import PdfFileWriter, PdfFileReader
+from pypdf.generic import RectangleObject
 
 def draw_box(canvas, color, x,y, width,height, text=None):
     canvas.setStrokeColorRGB(*color)
--- test/gen-trimmedpage.py.orig	2022-11-04 13:06:05.000000000 -0500
+++ test/gen-trimmedpage.py	2024-03-14 17:14:14.000000000 -0500
@@ -40,8 +40,8 @@
 from reportlab.lib.pagesizes import A4, legal, landscape
 from reportlab.pdfgen.canvas import Canvas
 
-from PyPDF2 import PdfFileWriter, PdfFileReader
-from PyPDF2.generic import RectangleObject
+from pypdf import PdfFileWriter, PdfFileReader
+from pypdf.generic import RectangleObject
 
 def draw_box(canvas, color, x,y, width,height, text=None):
     canvas.setStrokeColorRGB(*color)