ruby · ianks · Feb 1, 2026
diff --git a/bundler/lib/bundler/dependency.rb b/bundler/lib/bundler/dependency.rb
@@ -58,6 +58,12 @@ def glob
       @glob = @options["glob"]
     end
 
+    def sparse_checkout
+      return @sparse_checkout if defined?(@sparse_checkout)
+
+      @sparse_checkout = @options["sparse_checkout"]
+    end
+
     def platforms
       @platforms ||= Array(@options["platforms"])
     end

diff --git a/bundler/lib/bundler/dsl.rb b/bundler/lib/bundler/dsl.rb
@@ -17,7 +17,7 @@ def self.evaluate(gemfile, lockfile, unlock)
     VALID_PLATFORMS = Bundler::CurrentRuby::PLATFORM_MAP.keys.freeze
 
     VALID_KEYS = %w[group groups git path glob name branch ref tag require submodules
-                    platform platforms source install_if force_ruby_platform].freeze
+                    platform platforms source install_if force_ruby_platform sparse_checkout].freeze
 
     GITHUB_PULL_REQUEST_URL = %r{\Ahttps://github\.com/([A-Za-z0-9_\-\.]+/[A-Za-z0-9_\-\.]+)/pull/(\d+)\z}
     GITLAB_MERGE_REQUEST_URL = %r{\Ahttps://gitlab\.com/([A-Za-z0-9_\-\./]+)/-/merge_requests/(\d+)\z}

diff --git a/bundler/lib/bundler/lockfile_parser.rb b/bundler/lib/bundler/lockfile_parser.rb
@@ -47,7 +47,7 @@ def to_s
     PATH         = "PATH"
     PLUGIN       = "PLUGIN SOURCE"
     SPECS        = "  specs:"
-    OPTIONS      = /^  ([a-z]+): (.*)$/i
+    OPTIONS      = /^  ([a-z_]+): (.*)$/i
     SOURCE       = [GIT, GEM, PATH, PLUGIN].freeze
 
     SECTIONS_BY_VERSION_INTRODUCED = {

diff --git a/bundler/lib/bundler/man/bundle-add.1 b/bundler/lib/bundler/man/bundle-add.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-ADD" "1" "September 2025" ""
+.TH "BUNDLE\-ADD" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-add\fR \- Add gem to the Gemfile and run bundle install
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-binstubs.1 b/bundler/lib/bundler/man/bundle-binstubs.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-BINSTUBS" "1" "September 2025" ""
+.TH "BUNDLE\-BINSTUBS" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-binstubs\fR \- Install the binstubs of the listed gems
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-cache.1 b/bundler/lib/bundler/man/bundle-cache.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-CACHE" "1" "September 2025" ""
+.TH "BUNDLE\-CACHE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-cache\fR \- Package your needed \fB\.gem\fR files into your application
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-check.1 b/bundler/lib/bundler/man/bundle-check.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-CHECK" "1" "September 2025" ""
+.TH "BUNDLE\-CHECK" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-check\fR \- Verifies if dependencies are satisfied by installed gems
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-clean.1 b/bundler/lib/bundler/man/bundle-clean.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-CLEAN" "1" "September 2025" ""
+.TH "BUNDLE\-CLEAN" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-clean\fR \- Cleans up unused gems in your bundler directory
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-config.1 b/bundler/lib/bundler/man/bundle-config.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-CONFIG" "1" "September 2025" ""
+.TH "BUNDLE\-CONFIG" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-config\fR \- Set bundler configuration options
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-console.1 b/bundler/lib/bundler/man/bundle-console.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-CONSOLE" "1" "September 2025" ""
+.TH "BUNDLE\-CONSOLE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-console\fR \- Open an IRB session with the bundle pre\-loaded
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-doctor.1 b/bundler/lib/bundler/man/bundle-doctor.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-DOCTOR" "1" "September 2025" ""
+.TH "BUNDLE\-DOCTOR" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-doctor\fR \- Checks the bundle for common problems
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-env.1 b/bundler/lib/bundler/man/bundle-env.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-ENV" "1" "September 2025" ""
+.TH "BUNDLE\-ENV" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-env\fR \- Print information about the environment Bundler is running under
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-exec.1 b/bundler/lib/bundler/man/bundle-exec.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-EXEC" "1" "September 2025" ""
+.TH "BUNDLE\-EXEC" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-exec\fR \- Execute a command in the context of the bundle
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-fund.1 b/bundler/lib/bundler/man/bundle-fund.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-FUND" "1" "September 2025" ""
+.TH "BUNDLE\-FUND" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-fund\fR \- Lists information about gems seeking funding assistance
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-gem.1 b/bundler/lib/bundler/man/bundle-gem.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-GEM" "1" "September 2025" ""
+.TH "BUNDLE\-GEM" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-gem\fR \- Generate a project skeleton for creating a rubygem
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-help.1 b/bundler/lib/bundler/man/bundle-help.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-HELP" "1" "September 2025" ""
+.TH "BUNDLE\-HELP" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-help\fR \- Displays detailed help for each subcommand
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-info.1 b/bundler/lib/bundler/man/bundle-info.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-INFO" "1" "September 2025" ""
+.TH "BUNDLE\-INFO" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-info\fR \- Show information for the given gem in your bundle
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-init.1 b/bundler/lib/bundler/man/bundle-init.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-INIT" "1" "September 2025" ""
+.TH "BUNDLE\-INIT" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-init\fR \- Generates a Gemfile into the current working directory
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-install.1 b/bundler/lib/bundler/man/bundle-install.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-INSTALL" "1" "September 2025" ""
+.TH "BUNDLE\-INSTALL" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-install\fR \- Install the dependencies specified in your Gemfile
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-issue.1 b/bundler/lib/bundler/man/bundle-issue.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-ISSUE" "1" "September 2025" ""
+.TH "BUNDLE\-ISSUE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-issue\fR \- Get help reporting Bundler issues
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-licenses.1 b/bundler/lib/bundler/man/bundle-licenses.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-LICENSES" "1" "September 2025" ""
+.TH "BUNDLE\-LICENSES" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-licenses\fR \- Print the license of all gems in the bundle
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-list.1 b/bundler/lib/bundler/man/bundle-list.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-LIST" "1" "September 2025" ""
+.TH "BUNDLE\-LIST" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-list\fR \- List all the gems in the bundle
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-lock.1 b/bundler/lib/bundler/man/bundle-lock.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-LOCK" "1" "September 2025" ""
+.TH "BUNDLE\-LOCK" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-lock\fR \- Creates / Updates a lockfile without installing
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-open.1 b/bundler/lib/bundler/man/bundle-open.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-OPEN" "1" "September 2025" ""
+.TH "BUNDLE\-OPEN" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-open\fR \- Opens the source directory for a gem in your bundle
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-outdated.1 b/bundler/lib/bundler/man/bundle-outdated.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-OUTDATED" "1" "September 2025" ""
+.TH "BUNDLE\-OUTDATED" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-outdated\fR \- List installed gems with newer versions available
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-platform.1 b/bundler/lib/bundler/man/bundle-platform.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-PLATFORM" "1" "September 2025" ""
+.TH "BUNDLE\-PLATFORM" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-platform\fR \- Displays platform compatibility information
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-plugin.1 b/bundler/lib/bundler/man/bundle-plugin.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-PLUGIN" "1" "September 2025" ""
+.TH "BUNDLE\-PLUGIN" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-plugin\fR \- Manage Bundler plugins
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-pristine.1 b/bundler/lib/bundler/man/bundle-pristine.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-PRISTINE" "1" "September 2025" ""
+.TH "BUNDLE\-PRISTINE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-pristine\fR \- Restores installed gems to their pristine condition
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-remove.1 b/bundler/lib/bundler/man/bundle-remove.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-REMOVE" "1" "September 2025" ""
+.TH "BUNDLE\-REMOVE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-remove\fR \- Removes gems from the Gemfile
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-show.1 b/bundler/lib/bundler/man/bundle-show.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-SHOW" "1" "September 2025" ""
+.TH "BUNDLE\-SHOW" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-show\fR \- Shows all the gems in your bundle, or the path to a gem
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-update.1 b/bundler/lib/bundler/man/bundle-update.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-UPDATE" "1" "September 2025" ""
+.TH "BUNDLE\-UPDATE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-update\fR \- Update your gems to the latest available versions
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle-version.1 b/bundler/lib/bundler/man/bundle-version.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE\-VERSION" "1" "September 2025" ""
+.TH "BUNDLE\-VERSION" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\-version\fR \- Prints Bundler version information
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/bundle.1 b/bundler/lib/bundler/man/bundle.1
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "BUNDLE" "1" "September 2025" ""
+.TH "BUNDLE" "1" "February 2026" ""
 .SH "NAME"
 \fBbundle\fR \- Ruby Dependency Management
 .SH "SYNOPSIS"

diff --git a/bundler/lib/bundler/man/gemfile.5 b/bundler/lib/bundler/man/gemfile.5
@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.10.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.10.1
-.TH "GEMFILE" "5" "September 2025" ""
+.TH "GEMFILE" "5" "February 2026" ""
 .SH "NAME"
 \fBGemfile\fR \- A format for describing gem dependencies for Ruby programs
 .SH "SYNOPSIS"
@@ -293,6 +293,13 @@ gem "rails", git: "https://github\.com/rails/rails\.git", ref: "4aded"
 .TP
 \fBsubmodules\fR
 For reference, a git submodule \fIhttps://git\-scm\.com/book/en/v2/Git\-Tools\-Submodules\fR lets you have another git repository within a subfolder of your repository\. Specify \fBsubmodules: true\fR to cause bundler to expand any submodules included in the git repository
+.TP
+\fBsparse_checkout\fR
+Specify a directory to include when checking out a git repository\. Uses git's sparse\-checkout feature (requires git 2\.25+) to only download the specified directory, reducing disk usage for large repos\.
+.IP
+gem "foo", git: "https://github\.com/org/monorepo\.git", sparse_checkout: "packages/foo", glob: "packages/foo/*\.gemspec"
+.IP
+On git versions below 2\.25, the entire repository will be cloned with a warning\.
 .P
 If a git repository contains multiple \fB\.gemspecs\fR, each \fB\.gemspec\fR represents a gem located at the same place in the file system as the \fB\.gemspec\fR\.
 .IP "" 4

diff --git a/bundler/lib/bundler/man/gemfile.5.ronn b/bundler/lib/bundler/man/gemfile.5.ronn
@@ -352,6 +352,18 @@ Git repositories support a number of additional options.
     Specify `submodules: true` to cause bundler to expand any
     submodules included in the git repository
 
+  * `sparse_checkout`:
+    Specify a directory to include when checking out a git repository.
+    Uses git's sparse-checkout feature (requires git 2.25+) to only
+    download the specified directory, reducing disk usage for large repos.
+
+      gem "foo", git: "https://github.com/org/monorepo.git",
+                 sparse_checkout: "packages/foo",
+                 glob: "packages/foo/*.gemspec"
+
+    On git versions below 2.25, the entire repository will be cloned
+    with a warning.
+
 If a git repository contains multiple `.gemspecs`, each `.gemspec`
 represents a gem located at the same place in the file system as
 the `.gemspec`.