source-{sans,serif}-pro: reintroduce older font versions

Recently, Source Sans/Serif Pro fonts got renamed. The "Pro" suffix
was replaced with the major version of the font name.

In the case of Source Serif, the change was announced in
adobe-fonts/source-serif#77 and besides the
name font metric have been changed too. Therefore, documents using the
old "Pro" version might look differently when the font is changed to
the new "4" version.

In the case of Source Sans, the metrics seem not to have been
changed (adobe-fonts/source-sans#192), but
this comment (adobe-fonts/source-sans#192 (comment))
suggests that it might happen in the future.

Due to the above, it makes sense to keep both old "Pro" and
new (numbered) fonts as separate packages. This commit reintroduced
the old "Pro" versions.

It seems that Arch Linux is also distributing both versions:
https://github.com/archlinux/svntogit-packages/blob/0d70461e5a26cde02cadfda64078eb93192c6caa/trunk/PKGBUILD

Closes NixOS#157972

pkgs/data/fonts/source-sans-pro/default.nix

@@ -0,0 +1,30 @@
+{ lib, fetchzip }:
+
+# Source Sans Pro got renamed to Source Sans 3 (see
+# https://github.com/adobe-fonts/source-sans/issues/192). This is the
+# last version named "Pro". It is useful for backward compatibility
+# with older documents/templates/etc.
+let
+  version = "3.006";
+in fetchzip {
+  name = "source-sans-pro-${version}";
+
+  url = "https://github.com/adobe-fonts/source-sans/archive/${version}R.zip";
+
+  postFetch = ''
+    mkdir -p $out/share/fonts/{opentype,truetype,variable}
+    unzip -j $downloadedFile "*/OTF/*.otf" -d $out/share/fonts/opentype
+    unzip -j $downloadedFile "*/TTF/*.ttf" -d $out/share/fonts/truetype
+    unzip -j $downloadedFile "*/VAR/*.otf" -d $out/share/fonts/variable
+  '';
+
+  sha256 = "sha256-uWr/dFyLF65v0o6+oN/3RQoe4ziPspzGB1rgiBkoTYY=";
+
+  meta = with lib; {
+    homepage = "https://adobe-fonts.github.io/source-sans/";
+    description = "Sans serif font family for user interface environments";
+    license = licenses.ofl;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ ttuegel ];
+  };
+}

pkgs/data/fonts/source-serif-pro/default.nix

@@ -0,0 +1,30 @@
+{ lib, fetchzip }:
+
+# Source Serif Pro got renamed to Source Serif 4 (see
+# https://github.com/adobe-fonts/source-serif/issues/77). This is the
+# last version named "Pro". It is useful for backward compatibility
+# with older documents/templates/etc.
+let
+  version = "3.001";
+in fetchzip {
+  name = "source-serif-pro-${version}";
+
+  url = "https://github.com/adobe-fonts/source-serif/releases/download/${version}R/source-serif-pro-${version}R.zip";
+
+  postFetch = ''
+    mkdir -p $out/share/fonts/{opentype,truetype,variable}
+    unzip -j $downloadedFile "*/OTF/*.otf" -d $out/share/fonts/opentype
+    unzip -j $downloadedFile "*/TTF/*.ttf" -d $out/share/fonts/truetype
+    unzip -j $downloadedFile "*/VAR/*.otf" -d $out/share/fonts/variable
+  '';
+
+  sha256 = "sha256-rYWk8D41QMuuSP+cQMk8ttT7uX3a7gBk4OqjA7K9udk=";
+
+  meta = with lib; {
+    homepage = "https://adobe-fonts.github.io/source-serif/";
+    description = "Typeface for setting text in many sizes, weights, and languages. Designed to complement Source Sans";
+    license = licenses.ofl;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ ttuegel ];
+  };
+}

pkgs/top-level/aliases.nix

@@ -1123,8 +1123,6 @@ mapAliases ({
   source-han-serif-korean = source-han-serif;
   source-han-serif-simplified-chinese = source-han-serif;
   source-han-serif-traditional-chinese = source-han-serif;
-  source-sans-pro = source-sans; # Added 2021-10-20
-  source-serif-pro = source-serif; # Added 2021-10-20
 
   spaceOrbit = throw "'spaceOrbit' has been renamed to/replaced by 'space-orbit'"; # Converted to throw 2022-02-22
   spectral = neochat; # Added 2020-12-27

pkgs/top-level/all-packages.nix

@@ -24239,8 +24239,10 @@ with pkgs;
   source-code-pro = callPackage ../data/fonts/source-code-pro {};
 
   source-sans = callPackage ../data/fonts/source-sans { };
+  source-sans-pro = callPackage ../data/fonts/source-sans-pro { };
 
   source-serif = callPackage ../data/fonts/source-serif { };
+  source-serif-pro = callPackage ../data/fonts/source-serif-pro { };
 
   source-han-code-jp = callPackage ../data/fonts/source-han-code-jp { };