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author | Mx Kookie <kookie@spacekookie.de> | 2020-10-31 19:35:09 +0100 |
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committer | Mx Kookie <kookie@spacekookie.de> | 2020-10-31 19:35:09 +0100 |
commit | c4625b175f8200f643fd6e11010932ea44c78433 (patch) | |
tree | bce3f89888c8ac3991fa5569a878a9eab6801ccc /infra/libkookie/nixpkgs/pkgs/development/interpreters/ruby/ruby-version.nix | |
parent | 49f735974dd103039ddc4cb576bb76555164a9e7 (diff) | |
parent | d661aa56a8843e991261510c1bb28fdc2f6975ae (diff) |
Add 'infra/libkookie/' from commit 'd661aa56a8843e991261510c1bb28fdc2f6975ae'
git-subtree-dir: infra/libkookie
git-subtree-mainline: 49f735974dd103039ddc4cb576bb76555164a9e7
git-subtree-split: d661aa56a8843e991261510c1bb28fdc2f6975ae
Diffstat (limited to 'infra/libkookie/nixpkgs/pkgs/development/interpreters/ruby/ruby-version.nix')
-rw-r--r-- | infra/libkookie/nixpkgs/pkgs/development/interpreters/ruby/ruby-version.nix | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/infra/libkookie/nixpkgs/pkgs/development/interpreters/ruby/ruby-version.nix b/infra/libkookie/nixpkgs/pkgs/development/interpreters/ruby/ruby-version.nix new file mode 100644 index 000000000000..b1cbbfc216dc --- /dev/null +++ b/infra/libkookie/nixpkgs/pkgs/development/interpreters/ruby/ruby-version.nix @@ -0,0 +1,63 @@ +# Contains the ruby version heuristics +{ lib }: +with lib; +let + # The returned set should be immutable + rubyVersion = major: minor: tiny: tail: + rec { + inherit major minor tiny tail; + + # Contains the patch number "223" if tail is "p223" or null + patchLevel = + let + p = removePrefix "p" tail; + isPosInt = num: + 0 == stringLength + (replaceStrings + ["0" "1" "2" "3" "4" "5" "6" "7" "8" "9"] + ["" "" "" "" "" "" "" "" "" "" ] + num); + in + if hasPrefix "p" tail && isPosInt p then p + else null; + + # Shortcuts + majMin = "${major}.${minor}"; + majMinTiny = "${major}.${minor}.${tiny}"; + + # Ruby separates lib and gem folders by ABI version which isn't very + # consistent. + libDir = + if versionAtLeast majMinTiny "2.1.0" then + "${majMin}.0" + else if versionAtLeast majMinTiny "2.0.0" then + "2.0.0" + else if versionAtLeast majMinTiny "1.9.1" then + "1.9.1" + else + throw "version ${majMinTiny} is not supported"; + + # How ruby releases are tagged on github.com/ruby/ruby + gitTag = + let + base = "v${major}_${minor}_${tiny}"; + in + if patchLevel != null then + "${base}_${patchLevel}" + else + if tail != "" then + "${base}_${tail}" + else + base; + + # Implements the builtins.toString interface. + __toString = self: + self.majMinTiny + ( + if self.patchLevel != null then + "-p${self.patchLevel}" + else if self.tail != "" then + "-${self.tail}" + else ""); + }; +in + rubyVersion |