Add / Update recipes for qpdf.el, pdf-tools and elisp-tree-sitter (#2882)

* Add a recipe for qpdf.el

`orgtre/qpdf.el` is a transient wrapper over `qpdf/qpdf`, allowing you
to execute PDF transformation commands from inside Emacs

* Update the recipe for pdf-tools

- Raise the minimum supported Emacs version
- Remove unnecessary clauses

Closes: dimitri/el-get#2860

* Rename emacs-tree-sitter to elisp-tree-sitter

This is the new name of the repo.

Also, point it to the upstream package.

recipes/elisp-tree-sitter.rcp

@@ -0,0 +1,13 @@
+(:name elisp-tree-sitter
+       :description "Tree-sitter bindings for Emacs Lisp."
+       :type github
+       :minimum-emacs-version "25.1"
+       :pkgname "emacs-tree-sitter/elisp-tree-sitter"
+       :load-path ("core" "lisp" "langs")
+       ;; Recipe based on instructions from:
+       ;; https://emacs-tree-sitter.github.io/installation/
+       :load ("lisp/tree-sitter.el"
+              "lisp/tree-sitter-hl.el"
+              "langs/tree-sitter-langs.el"
+              "lisp/tree-sitter-debug.el"
+              "lisp/tree-sitter-query.el"))

recipes/emacs-tree-sitter.rcp

@@ -1,8 +1,12 @@
+;; NOTE: This recipe has been deprecated in favor of elisp-tree-sitter.rcp. Please install that instead.
 (:name emacs-tree-sitter
-       :description "Emacs Lisp bindings for tree-sitter, an incremental parsing library."
+       :description "NOTE: This recipe has been deprecated in favor of elisp-tree-sitter. Please install that instead."
        :type github
+       :minimum-emacs-version "25.1"
        :pkgname "vedang/emacs-tree-sitter"
        :load-path ("core" "lisp" "langs")
+       ;; Recipe based on instructions from:
+       ;; https://emacs-tree-sitter.github.io/installation/
        :load ("lisp/tree-sitter.el"
               "lisp/tree-sitter-hl.el"
               "langs/tree-sitter-langs.el"

recipes/pdf-tools.rcp

@@ -1,18 +1,10 @@
 (:name pdf-tools
        :description "pdf tools"
        :type github
-       :minimum-emacs-version "24.3"
-       ;; On Debian, "libpoppler-glib-dev" "libpoppler-dev"
-       ;; "libpoppler-private-dev" are needed to build c code in this package.
+       :minimum-emacs-version "26.3"
        :pkgname "vedang/pdf-tools"
        :depends (let-alist tablist)
-
-       ;; pdf-tools' code written to find "epdfinfo" executable in the lisp
-       ;; directory. we preset following variable to avoid that.
-       :prepare (setq pdf-info-epdfinfo-program
-                      (concat (el-get-package-directory "pdf-tools")
-                              "server/epdfinfo"))
        :build (("make" "autobuild"))
        :build/berkeley-unix (("gmake" "autobuild"))
-       :load-path (("lisp"))
+       :load-path ("lisp")
        :compile ("lisp/"))

recipes/qpdf.rcp

@@ -0,0 +1,6 @@
+(:name qpdf
+       :description "A transient wrapper for qpdf/qpdf."
+       :type github
+       :pkgname "orgtre/qpdf.el"
+       :minimum-emacs-version "26.3"
+       :depends (transient))