diff --git a/init.el b/init.el
index aa1a7ec..d49b163 100644
--- a/init.el
+++ b/init.el
@@ -29,12 +29,12 @@
 
 ;;; Install Elpaca
 
-(defvar elpaca-installer-version 0.8)
+(defvar elpaca-installer-version 0.9)
 (defvar elpaca-directory (expand-file-name "elpaca/" user-emacs-directory))
 (defvar elpaca-builds-directory (expand-file-name "builds/" elpaca-directory))
 (defvar elpaca-repos-directory (expand-file-name "repos/" elpaca-directory))
 (defvar elpaca-order '(elpaca :repo "https://github.com/progfolio/elpaca.git"
-                              :ref nil :depth 1
+                              :ref nil :depth 1 :inherit ignore
                               :files (:defaults "elpaca-test.el" (:exclude "extensions"))
                               :build (:not elpaca--activate-package)))
 (let* ((repo  (expand-file-name "elpaca/" elpaca-repos-directory))
@@ -68,10 +68,10 @@
 (add-hook 'after-init-hook #'elpaca-process-queues)
 (elpaca `(,@elpaca-order))
 
-;; Install use-package support for Elpaca
-(elpaca elpaca-use-package
-  ;; Enable use-package :ensure support for Elpaca.
-  (elpaca-use-package-mode))
+  ;; Install use-package support for Elpaca
+  (elpaca elpaca-use-package
+    ;; Enable use-package :ensure support for Elpaca.
+    (elpaca-use-package-mode))
 
 (defmacro prot-emacs-comment (&rest body)
   "Determine what to do with BODY.
diff --git a/nebkor-emacs.org b/nebkor-emacs.org
index 6b3eb42..2226eee 100644
--- a/nebkor-emacs.org
+++ b/nebkor-emacs.org
@@ -156,6 +156,7 @@
   - [[#the-nebkor-langsel-section-for-python][The =nebkor-langs.el= section for Python]]
   - [[#the-nebkor-langsel-section-for-ziglang-zig-mode][The =nebkor-langs.el= section for Ziglang (~zig-mode~)]]
   - [[#the-nebkor-langsel-section-for-clojure-programming][The =nebkor-langs.el= section for Clojure programming]]
+  - [[#the-nebkor-langsel-section-for-scheme][The =nebkor-langs.el= section for Scheme]]
   - [[#the-nebkor-langsel-section-for-emacs-lisp][The =nebkor-langs.el= section for Emacs Lisp]]
   - [[#finally-we-provide-the-nebkor-langsel-module][Finally, we provide the =nebkor-langs.el= module]]
 - [[#the-nebkor-studyel-module][The =nebkor-study.el= module]]
@@ -497,13 +498,12 @@ When using ~elpaca~, here are some gotchas you should be aware of
 
 #+begin_src emacs-lisp :tangle "init.el"
   ;;; Install Elpaca
-
-  (defvar elpaca-installer-version 0.8)
+  (defvar elpaca-installer-version 0.9)
   (defvar elpaca-directory (expand-file-name "elpaca/" user-emacs-directory))
   (defvar elpaca-builds-directory (expand-file-name "builds/" elpaca-directory))
   (defvar elpaca-repos-directory (expand-file-name "repos/" elpaca-directory))
   (defvar elpaca-order '(elpaca :repo "https://github.com/progfolio/elpaca.git"
-                                :ref nil :depth 1
+                                :ref nil :depth 1 :inherit ignore
                                 :files (:defaults "elpaca-test.el" (:exclude "extensions"))
                                 :build (:not elpaca--activate-package)))
   (let* ((repo  (expand-file-name "elpaca/" elpaca-repos-directory))
@@ -857,120 +857,43 @@ Another section defines some complementary functionality
   ;;;; Fontaine (font configurations)
   ;; Read the manual: <https://protesilaos.com/emacs/fontaine>
   (use-package fontaine
-    :ensure t
-    :if (display-graphic-p)
-    :hook
-    ;; Persist the latest font preset when closing/starting Emacs and
-    ;; while switching between themes.
-    ((elpaca-after-init . fontaine-mode)
-     (elpaca-after-init . (lambda ()
-                     ;; Set last preset or fall back to desired style from `fontaine-presets'.
-                     (fontaine-set-preset (or (fontaine-restore-latest-preset) 'regular))))
-     (enable-theme-functions . fontaine-apply-current-preset))
-    :config
-    ;; This is defined in Emacs C code: it belongs to font settings.
-    (setq x-underline-at-descent-line nil)
+  :ensure t
+  :if (display-graphic-p)
+  :config
+  ;; This is defined in Emacs C code: it belongs to font settings.
+  (setq x-underline-at-descent-line nil)
 
-    ;; This is the default value.  Just including it here for
-    ;; completeness.
-    (setq fontaine-latest-state-file (locate-user-emacs-file "fontaine-latest-state.eld"))
+  ;; This is the default value.  Just including it here for
+  ;; completeness.
+  (setq fontaine-latest-state-file (locate-user-emacs-file "fontaine-latest-state.eld"))
 
-    (setq fontaine-presets
-          '((small
-             :default-family "Noto Sans Mono"
-             :default-height 130)
-            (regular
-             :default-height 150)
-            (medium
-             :default-weight semilight
-             :default-height 170
-             :bold-weight extrabold)
-            (large
-             :inherit medium
-             :default-height 190)
-            (presentation
-             :inherit medium
-             :default-height 250)
-            (jumbo
-             :inherit medium
-             :default-height 330)
-            (t
-             ;; I keep all properties for didactic purposes, but most can be
-             ;; omitted.  See the fontaine manual for the technicalities:
-             ;; <https://protesilaos.com/emacs/fontaine>.
-             :default-family "Noto Sans Mono"
-             :default-weight regular
-             :default-slant normal
-             :default-width normal
-             :default-height 150
-
-             :fixed-pitch-family nil ; falls back to :default-family
-             :fixed-pitch-weight nil ; falls back to :default-weight
-             :fixed-pitch-slant nil
-             :fixed-pitch-width nil
-             :fixed-pitch-height 1.0
-
-             :fixed-pitch-serif-family nil
-             :fixed-pitch-serif-weight nil
-             :fixed-pitch-serif-slant nil
-             :fixed-pitch-serif-width nil
-             :fixed-pitch-serif-height 1.0
-
-             :variable-pitch-family "Iosevka"
-             :variable-pitch-weight nil
-             :variable-pitch-slant nil
-             :variable-pitch-width nil
-             :variable-pitch-height 1.0
-
-             :mode-line-active-family nil
-             :mode-line-active-weight nil
-             :mode-line-active-slant nil
-             :mode-line-active-width nil
-             :mode-line-active-height 1.0
-
-             :mode-line-inactive-family nil
-             :mode-line-inactive-weight nil
-             :mode-line-inactive-slant nil
-             :mode-line-inactive-width nil
-             :mode-line-inactive-height 1.0
-
-             :header-line-family nil
-             :header-line-weight nil
-             :header-line-slant nil
-             :header-line-width nil
-             :header-line-height 1.0
-
-             :line-number-family nil
-             :line-number-weight nil
-             :line-number-slant nil
-             :line-number-width nil
-             :line-number-height 1.0
-
-             :tab-bar-family nil
-             :tab-bar-weight nil
-             :tab-bar-slant nil
-             :tab-bar-width nil
-             :tab-bar-height 1.0
-
-             :tab-line-family nil
-             :tab-line-weight nil
-             :tab-line-slant nil
-             :tab-line-width nil
-             :tab-line-height 1.0
-
-             :bold-family nil
-             :bold-slant nil
-             :bold-weight bold
-             :bold-width nil
-             :bold-height 1.0
-
-             :italic-family nil
-             :italic-weight nil
-             :italic-slant italic
-             :italic-width nil
-             :italic-height 1.0
-
-             :line-spacing nil))))
+  (setq fontaine-presets
+        '((small
+           :default-height 120)
+          (regular
+           :default-height 130)
+          (medium
+           :default-weight semilight
+           :default-height 170
+           :bold-weight extrabold)
+          (large
+           :inherit medium
+           :default-height 190)
+          (presentation
+           :inherit medium
+           :default-height 250)
+          (jumbo
+           :inherit medium
+           :default-height 330)
+          (t
+           ;; See the fontaine manual for the technicalities:
+           ;; <https://protesilaos.com/emacs/fontaine>.
+           :default-family "Noto Sans Mono"
+           :default-weight normal
+           :variable-pitch-family "Iosevka"
+           :variable-pitch-height 1.05)))
+  (fontaine-set-preset (or (fontaine-restore-latest-preset) 'small))
+  (fontaine-mode 1))
 #+end_src
 
 ** The =nebkor-theme.el= section for font previews (~show-font~)
@@ -5292,6 +5215,24 @@ for this to continue.
           (user-error "Could not find jet installed")))))
 #+end_src
 
+
+
+** The =nebkor-langs.el= section for Scheme
+:PROPERTIES:
+:ID:       628dfbea-4ee9-4af0-b1f1-d445afa2d4f9
+:END:
+
+#+begin_src emacs-lisp :tangle "nebkor-modules/nebkor-langs.el"
+  (use-package geiser-guile
+    :ensure t)
+
+  (use-package macrostep-geiser
+    :ensure t
+    :after geiser-repl
+    :config (add-hook 'geiser-repl-mode-hook #'macrostep-geiser-setup))
+#+end_src
+
+
 ** The =nebkor-langs.el= section for Emacs Lisp
 :PROPERTIES:
 :CUSTOM_ID: h:54D8C607-5CF6-425A-BFBD-0602334BE199
diff --git a/nebkor-modules/nebkor-langs.el b/nebkor-modules/nebkor-langs.el
index c662c57..6b889fb 100644
--- a/nebkor-modules/nebkor-langs.el
+++ b/nebkor-modules/nebkor-langs.el
@@ -355,6 +355,14 @@ NS is the namespace information passed into the function by cider."
             (goto-char p))
         (user-error "Could not find jet installed")))))
 
+(use-package geiser-guile
+  :ensure t)
+
+(use-package macrostep-geiser
+  :ensure t
+  :after geiser-repl
+  :config (add-hook 'geiser-repl-mode-hook #'macrostep-geiser-setup))
+
 ;;; Settings for Interaction mode for Emacs-Lisp
 (use-package ielm
   :ensure nil
diff --git a/nebkor-modules/nebkor-theme.el b/nebkor-modules/nebkor-theme.el
index e301e93..d80c45f 100644
--- a/nebkor-modules/nebkor-theme.el
+++ b/nebkor-modules/nebkor-theme.el
@@ -81,120 +81,43 @@
 ;;;; Fontaine (font configurations)
 ;; Read the manual: <https://protesilaos.com/emacs/fontaine>
 (use-package fontaine
-  :ensure t
-  :if (display-graphic-p)
-  :hook
-  ;; Persist the latest font preset when closing/starting Emacs and
-  ;; while switching between themes.
-  ((elpaca-after-init . fontaine-mode)
-   (elpaca-after-init . (lambda ()
-                   ;; Set last preset or fall back to desired style from `fontaine-presets'.
-                   (fontaine-set-preset (or (fontaine-restore-latest-preset) 'regular))))
-   (enable-theme-functions . fontaine-apply-current-preset))
-  :config
-  ;; This is defined in Emacs C code: it belongs to font settings.
-  (setq x-underline-at-descent-line nil)
+:ensure t
+:if (display-graphic-p)
+:config
+;; This is defined in Emacs C code: it belongs to font settings.
+(setq x-underline-at-descent-line nil)
 
-  ;; This is the default value.  Just including it here for
-  ;; completeness.
-  (setq fontaine-latest-state-file (locate-user-emacs-file "fontaine-latest-state.eld"))
+;; This is the default value.  Just including it here for
+;; completeness.
+(setq fontaine-latest-state-file (locate-user-emacs-file "fontaine-latest-state.eld"))
 
-  (setq fontaine-presets
-        '((small
-           :default-family "Noto Sans Mono"
-           :default-height 130)
-          (regular
-           :default-height 150)
-          (medium
-           :default-weight semilight
-           :default-height 170
-           :bold-weight extrabold)
-          (large
-           :inherit medium
-           :default-height 190)
-          (presentation
-           :inherit medium
-           :default-height 250)
-          (jumbo
-           :inherit medium
-           :default-height 330)
-          (t
-           ;; I keep all properties for didactic purposes, but most can be
-           ;; omitted.  See the fontaine manual for the technicalities:
-           ;; <https://protesilaos.com/emacs/fontaine>.
-           :default-family "Noto Sans Mono"
-           :default-weight regular
-           :default-slant normal
-           :default-width normal
-           :default-height 150
-
-           :fixed-pitch-family nil ; falls back to :default-family
-           :fixed-pitch-weight nil ; falls back to :default-weight
-           :fixed-pitch-slant nil
-           :fixed-pitch-width nil
-           :fixed-pitch-height 1.0
-
-           :fixed-pitch-serif-family nil
-           :fixed-pitch-serif-weight nil
-           :fixed-pitch-serif-slant nil
-           :fixed-pitch-serif-width nil
-           :fixed-pitch-serif-height 1.0
-
-           :variable-pitch-family "Iosevka"
-           :variable-pitch-weight nil
-           :variable-pitch-slant nil
-           :variable-pitch-width nil
-           :variable-pitch-height 1.0
-
-           :mode-line-active-family nil
-           :mode-line-active-weight nil
-           :mode-line-active-slant nil
-           :mode-line-active-width nil
-           :mode-line-active-height 1.0
-
-           :mode-line-inactive-family nil
-           :mode-line-inactive-weight nil
-           :mode-line-inactive-slant nil
-           :mode-line-inactive-width nil
-           :mode-line-inactive-height 1.0
-
-           :header-line-family nil
-           :header-line-weight nil
-           :header-line-slant nil
-           :header-line-width nil
-           :header-line-height 1.0
-
-           :line-number-family nil
-           :line-number-weight nil
-           :line-number-slant nil
-           :line-number-width nil
-           :line-number-height 1.0
-
-           :tab-bar-family nil
-           :tab-bar-weight nil
-           :tab-bar-slant nil
-           :tab-bar-width nil
-           :tab-bar-height 1.0
-
-           :tab-line-family nil
-           :tab-line-weight nil
-           :tab-line-slant nil
-           :tab-line-width nil
-           :tab-line-height 1.0
-
-           :bold-family nil
-           :bold-slant nil
-           :bold-weight bold
-           :bold-width nil
-           :bold-height 1.0
-
-           :italic-family nil
-           :italic-weight nil
-           :italic-slant italic
-           :italic-width nil
-           :italic-height 1.0
-
-           :line-spacing nil))))
+(setq fontaine-presets
+      '((small
+         :default-height 120)
+        (regular
+         :default-height 130)
+        (medium
+         :default-weight semilight
+         :default-height 170
+         :bold-weight extrabold)
+        (large
+         :inherit medium
+         :default-height 190)
+        (presentation
+         :inherit medium
+         :default-height 250)
+        (jumbo
+         :inherit medium
+         :default-height 330)
+        (t
+         ;; See the fontaine manual for the technicalities:
+         ;; <https://protesilaos.com/emacs/fontaine>.
+         :default-family "Noto Sans Mono"
+         :default-weight normal
+         :variable-pitch-family "Iosevka"
+         :variable-pitch-height 1.05)))
+(fontaine-set-preset (or (fontaine-restore-latest-preset) 'small))
+(fontaine-mode 1))
 
 ;;;; Show Font (preview fonts)
 ;; Read the manual: <https://protesilaos.com/emacs/show-font>