gnu: Add comments to the bottom of a few package modules.

This will hopefully discourage patches which add new packages to the bottom of
files, as this increases the likelihood of conflicts when applying patches.

If there are more specific ways that packages should be arranged in specific
modules, this message can be updated accordingly.

* gnu/packages/bioconductor.scm: Add comment discouraging adding packages to
the bottom of the file.
* gnu/packages/bioinformatics.scm: ditto.
* gnu/packages/cran.scm: ditto.
* gnu/packages/crates-io.scm: ditto.
* gnu/packages/emacs-xyz.scm: ditto.
* gnu/packages/golang.scm: ditto.
* gnu/packages/guile-xyz.scm: ditto.
* gnu/packages/haskell-xyz.scm: ditto.
* gnu/packages/java.scm: ditto.
* gnu/packages/julia-xyz.scm: ditto.
* gnu/packages/lisp-xyz.scm: ditto.
* gnu/packages/ocaml.scm: ditto.
* gnu/packages/perl.scm: ditto.
* gnu/packages/python-science.scm: ditto.
* gnu/packages/python-xyz.scm: ditto.
* gnu/packages/ruby.scm: ditto.
* gnu/packages/tex.scm: ditto.

gnu/packages/bioconductor.scm

@@ -17036,3 +17036,9 @@ (define-public r-phyloseq
      "Phyloseq provides a set of classes and tools to facilitate the import,
 storage, analysis, and graphical display of microbiome census data.")
     (license license:agpl3)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/bioinformatics.scm

@@ -16721,3 +16721,9 @@ (define-public go-github-com-biogo-biogo
     (description
      "Bíogo is a bioinformatics library for the Go language.")
     (license license:bsd-3)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/cran.scm

@@ -34569,3 +34569,9 @@ (define-public r-sungeo
      "Tools for integrating spatially-misaligned GIS datasets.  Part of the
 Sub-National Geospatial Data Archive System.")
     (license license:gpl2)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/crates-io.scm

@@ -75105,3 +75105,9 @@ (define-public rust-pam-sys-0.5
     (description
      "This crate uses bindgen to generate the raw FFI definitions for PAM. For a rustified API consider using pam.")
     (license (list license:expat license:asl2.0))))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/emacs-xyz.scm

@@ -32570,3 +32570,9 @@ (define-public emacs-vertico-posframe
 a Vertico extension which provides a way to pop up a frame at point to show
 a vertical completion UI.")
     (license license:gpl3+)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/golang.scm

@@ -9992,3 +9992,9 @@ (define-public go-github-com-disintegration-imaging
     (description "This package provides basic image processing functions
 (resize, rotate, crop, brightness/contrast adjustments, etc.).")
     (license license:expat)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/guile-xyz.scm

@@ -5200,3 +5200,9 @@ (define-public guile-goblins
 the core layer of Spritely's work to support healthy distributed
 networked communities.")
     (license license:asl2.0)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/haskell-xyz.scm

@@ -16123,3 +16123,8 @@ (define-public ghc-singleton-bool
      "This package provides Type-level booleans.")
     (license license:bsd-3)))
 
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/java.scm

@@ -14323,3 +14323,9 @@ (define (input-jar input)
 @item The PlusCal translator.
 @end itemize")
       (license license:expat))))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/julia-xyz.scm

@@ -5878,3 +5878,9 @@ (define-public julia-zygote
 differentiation (AD) in Julia, and is the next-generation AD system for the
 Flux differentiable programming framework.")
     (license license:expat)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/lisp-xyz.scm

@@ -23897,3 +23897,9 @@ (define-public cl-smug
 
 (define-public ecl-smug
   (sbcl-package->ecl-package sbcl-smug))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/ocaml.scm

@@ -8774,3 +8774,9 @@ (define-public ocaml-guile
      "The OCaml guile library provides high-level OCaml bindings to GNU Guile
 3.0, supporting easy interop between OCaml and GNU Guile Scheme.")
     (license license:gpl3+)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/perl.scm

@@ -11901,3 +11901,9 @@ (define-public perl-socket-msghdr
 information (cmsghdr).  This ancillary data may be used for file descriptor
 passing, IPv6 operations, and a host of implemenation-specific extensions.")
     (license license:perl-license)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/python-science.scm

@@ -1478,3 +1478,9 @@ (define-public python-opt-einsum
 well as potentially any library which conforms to a standard API. See the
 documentation for more information.")
     (license license:expat)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/python-xyz.scm

@@ -30791,3 +30791,9 @@ (define-public python-pymonad
 @item Type annotations to help ensure correct usage
 @end itemize")
     (license license:bsd-3)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/ruby.scm

@@ -13766,3 +13766,9 @@ (define (run-with-output-file file command . args)
 has not yet been packaged for Guix.")
     (license license:bsd-2)
     (properties `((upstream-name . "anystyle-cli")))))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;

gnu/packages/tex.scm

@@ -11685,3 +11685,9 @@ (define-public texlive-latex-totcount
 interest.  Since most such counters are simply incremented when they are
 changed, the recorded value will usually be the maximum value.")
     (license license:lppl1.3c+)))
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above by existing packages with similar
+;;; functionality or similar names.
+;;;