add latex-source attribute for manifest

CHANGELOG.md

@@ -9,6 +9,10 @@ Instructions: Add a subsection under `[Unreleased]` for additions, fixes, change
 
 ## [Unreleased]
 
+### Added
+
+- The `latex-source` attribute, set to anything except "no", on a target with format `pdf` will copy latex source files to output directory.
+
 ## [2.32.0] - 2025-11-23
 
 Includes updates to core through commit: [ce20f15](https://github.com/PreTeXtBook/pretext/commit/ce20f15d525f2d1e7a3c3fb8da3bb5fa9d16d3ee)

pretext/project/__init__.py

@@ -132,6 +132,16 @@ class Target(pxml.BaseXmlModel, tag="target", search_mode=SearchMode.UNORDERED):
     latex_engine: LatexEngine = pxml.attr(
         name="latex-engine", default=LatexEngine.XELATEX
     )
+    # Flag to indicate whether to include LaTeX source files in the output directory when building a PDF target.
+    latex_source: t.Optional[str] = pxml.attr(name="latex-source", default=None)
+
+    @field_validator("latex_source")
+    @classmethod
+    def latex_source_validator(cls, v: t.Optional[str]) -> bool:
+        if v is None:
+            return False
+        return v.lower() != "no"
+
     braille_mode: BrailleMode = pxml.attr(
         name="braille-mode", default=BrailleMode.EMBOSS
     )
@@ -769,6 +779,9 @@ def build(
                         )
                         log.debug(e, exc_info=True)
             elif self.format == Format.PDF:
+                # Include latex source files if requested.
+                if self.latex_source:
+                    latex = True
                 core.pdf(
                     xml=self.source_abspath(),
                     pub_file=self.publication_abspath().as_posix(),
@@ -777,7 +790,7 @@ def build(
                     out_file=out_file,
                     dest_dir=self.output_dir_abspath().as_posix(),
                     method=self.latex_engine,
-                    outputs="all" if latex else "pdf",
+                    outputs="all" if latex else "pdf-only",
                 )
             elif self.format == Format.LATEX:
                 core.pdf(