April 2025 - ruby-core - ml.ruby-lang.org

[ruby-core:121489] [Ruby Bug#21207] CSV gem not installing in head
by MSP-Greg (Greg L) 13 Apr '25

13 Apr '25

Issue #21207 has been reported by MSP-Greg (Greg L). ---------------------------------------- Bug #21207: CSV gem not installing in head https://bugs.ruby-lang.org/issues/21207 * Author: MSP-Greg (Greg L) * Status: Open * ruby -v: ruby 3.5.0dev (2025-03-31T14:56:29Z master 8a475d15d6) +PRISM * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- The current MinGW workflow in Ruby shows: ```text skipped bundled gems: csv-3.3.4.gem not found in bundled_gems ``` I verified the same locally with both a Windows UCRT build and an Ubuntu build, and the ruby-loco builds are also failing. The current line in `bundled_gems`: ```text csv 3.3.3 https://github.com/ruby/csv e0874e47e2730dacccdb0c534a2cdc073d3bdaea ``` If one changes that to the below, ruby-loco builds pass. ```text csv 3.3.4 https://github.com/ruby/csv e0874e47e2730dacccdb0c534a2cdc073d3bdaea ``` But, Ruby's CI fails in the `./.github/actions/setup/directories` step. -- https://bugs.ruby-lang.org/

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[ruby-core:116555] [Ruby master Feature#20233] pkg-config not working on MSVC
by jmarrec (Julien Marrec) 13 Apr '25

13 Apr '25

Issue #20233 has been reported by jmarrec (Julien Marrec). ---------------------------------------- Feature #20233: pkg-config not working on MSVC https://bugs.ruby-lang.org/issues/20233 * Author: jmarrec (Julien Marrec) * Status: Open * Priority: Normal ---------------------------------------- The PKG_CONFIG variable is not respected in win32/Makefile.sub Also, need to ideally use the `--msvc-syntax` flag (pkgconf 1.4.0, released 7 years ago, adds it). But mostly, I realized that the `try_ldflags` in `lib/mkmf.rb` actually passes these ldflags as the `opt` parameter to the `link_command` function, and not as `ldflags`. While the UNIX systems are forgiving, the MSVC compiler is not, and because the flags are passed before the `-link`, MSVC complains that it ignores it and therefore cannot find the requested library. -- https://bugs.ruby-lang.org/

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[ruby-core:121626] [Ruby Feature#21263] eval-after-require hook
by znz (Kazuhiro NISHIYAMA) 10 Apr '25

10 Apr '25

Issue #21263 has been reported by znz (Kazuhiro NISHIYAMA). ---------------------------------------- Feature #21263: eval-after-require hook https://bugs.ruby-lang.org/issues/21263 * Author: znz (Kazuhiro NISHIYAMA) * Status: Open ---------------------------------------- I want to register hook after require. But I have no idea how to write it. Expected use cases: 1. Load related things after require. For example, IRB load related RBS after require something. 2. Soft dependency. For example, mashalling libraries load codes supporting bigdecimal, date, or some optional data types after require them only. -- https://bugs.ruby-lang.org/

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[ruby-core:121625] [Ruby Feature#18035] Introduce general model/semantic for immutability.
by ioquatix (Samuel Williams) 10 Apr '25

10 Apr '25

Issue #18035 has been updated by ioquatix (Samuel Williams). I found a good example of why the proposed interface would be a good idea: https://github.com/ruby/resolv/pull/62 This PR introduces lot of `freeze`. For example: ```ruby return { :nameserver => nameserver.freeze, :search => search.freeze, :ndots => ndots.freeze }.freeze ---------------------------------------- Feature #18035: Introduce general model/semantic for immutability. https://bugs.ruby-lang.org/issues/18035#change-112680 * Author: ioquatix (Samuel Williams) * Status: Open ---------------------------------------- It would be good to establish some rules around mutability, immutability, frozen, and deep frozen in Ruby. I see time and time again, incorrect assumptions about how this works in production code. Constants that aren't really constant, people using `#freeze` incorrectly, etc. I don't have any particular preference but: - We should establish consistent patterns where possible, e.g. - Objects created by `new` are mutable. - Objects created by literal are immutable. We have problems with how `freeze` works on composite data types, e.g. `Hash#freeze` does not impact children keys/values, same for Array. Do we need to introduce `freeze(true)` or `#deep_freeze` or some other method? Because of this, frozen does not necessarily correspond to immutable. This is an issue which causes real world problems. I also propose to codify this where possible, in terms of "this class of object is immutable" should be enforced by the language/runtime, e.g. ```ruby module Immutable def new(...) super.freeze end end class MyImmutableObject extend Immutable def initialize(x) @x = x end def freeze return self if frozen? @x.freeze super end end o = MyImmutableObject.new([1, 2, 3]) puts o.frozen? ``` Finally, this area has an impact to thread and fiber safe programming, so it is becoming more relevant and I believe that the current approach which is rather adhoc is insufficient. I know that it's non-trivial to retrofit existing code, but maybe it can be done via magic comment, etc, which we already did for frozen string literals. Proposed PR: https://github.com/ruby/ruby/pull/4879 -- https://bugs.ruby-lang.org/

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[ruby-core:121608] [Ruby Bug#21260] duping stringio objects shares cursors
by chucke (Tiago Cardoso) 10 Apr '25

10 Apr '25

Issue #21260 has been reported by chucke (Tiago Cardoso). ---------------------------------------- Bug #21260: duping stringio objects shares cursors https://bugs.ruby-lang.org/issues/21260 * Author: chucke (Tiago Cardoso) * Status: Open * ruby -v: ruby 3.4.2 (2025-02-15 revision d2930f8e7a) +PRISM [x86_64-darwin23] * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- I've found that, if I `.dup` a stringio, when I read one of the objects, the cursor also moves internally on the other: ```ruby require "stringio" s1 = StringIO.new("test") s2 = s1.dup s1.read #=> "test" s2.read #=> "" s1.rewind s2.rewind s2.read #=> "test" s1.read #=> "" s1.pos #=> 4 s2.pos #=> 4 ``` -- https://bugs.ruby-lang.org/

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[ruby-core:121066] [Ruby master Bug#21141] `Time#utc?` does not work with a timezone object
by nobu (Nobuyoshi Nakada) 09 Apr '25

09 Apr '25

Issue #21141 has been reported by nobu (Nobuyoshi Nakada). ---------------------------------------- Bug #21141: `Time#utc?` does not work with a timezone object https://bugs.ruby-lang.org/issues/21141 * Author: nobu (Nobuyoshi Nakada) * Status: Open * Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED ---------------------------------------- ```ruby require 'timezone' require 'tzinfo' t = Time.now(in: "UTC") t_timezone = Time.now(in: Timezone["UTC"]) t_tzinfo = Time.now(in: TZInfo::Timezone.get("UTC")) p t.utc? #=> true p t_timezone.utc? #=> false p t_tzinfo.utc? #=> false ``` This also affects `strftime("%-z")`. -- https://bugs.ruby-lang.org/

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[ruby-core:121589] New contributor
by Matteo Nicoli 08 Apr '25

08 Apr '25

Hi everybody, I am new to this community, and I would like to contribute to the development of Ruby. Although I’m not a very experienced Ruby programmer, I’ve been developing in C for several years. I was wondering if any experienced contributors could suggest some “good first issue” (either bugfix or feature) that I could work on. I couldn’t find this label on the Ruby Issues portal. Thank you for your time. Best regards, Matteo

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[ruby-core:121587] [Ruby Feature#16993] Sets: from hash keys using Hash#key_set
by Dan0042 (Daniel DeLorme) 08 Apr '25

08 Apr '25

Issue #16993 has been updated by Dan0042 (Daniel DeLorme). mame (Yusuke Endoh) wrote in #note-9: > Given the convention of deriving methods such as `key_set` from `keys`, where the former returns a set instead of an array, one might expect a corresponding derivation like `Kernel#instance_variable_set` for `Kernel#instance_variables`. Unfortunately, this would conflict with an existing method name. In https://github.com/ruby/set/pull/40 the name was changed to #keys_to_set, so this comment doesn't apply anymore. Then again I wish all optimizations like this could be implemented at the VM level, so that `hash.keys.to_set` would automatically be efficient rather than having to explicitly use the efficient version #keys_to_set. ---------------------------------------- Feature #16993: Sets: from hash keys using Hash#key_set https://bugs.ruby-lang.org/issues/16993#change-112642 * Author: marcandre (Marc-Andre Lafortune) * Status: Open ---------------------------------------- To create a set from hash keys currently implies a temporary array for all keys, rehashing all those keys and rebuilding a hash. Instead, the hash could be copied and its values set to `true`. ```ruby h = {a: 1} # Now: Set.new(h.keys) # => Set[:a] # After h.key_set # => Set[:a], efficiently. ``` -- https://bugs.ruby-lang.org/

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[ruby-core:121586] Email Error (Action Needed)
by Administrator ml.ruby-lang.org 08 Apr '25

08 Apr '25

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[ruby-core:121570] [Ruby Feature#16993] Sets: from hash keys using Hash#key_set
by mame (Yusuke Endoh) 07 Apr '25

07 Apr '25

Issue #16993 has been updated by mame (Yusuke Endoh). Given the convention of deriving methods such as `key_set` from `keys`, where the former returns a set instead of an array, one might expect a corresponding derivation like `Kernel#instance_variable_set` for `Kernel#instance_variables`. Unfortunately, this would conflict with an existing method name. ---------------------------------------- Feature #16993: Sets: from hash keys using Hash#key_set https://bugs.ruby-lang.org/issues/16993#change-112627 * Author: marcandre (Marc-Andre Lafortune) * Status: Open ---------------------------------------- To create a set from hash keys currently implies a temporary array for all keys, rehashing all those keys and rebuilding a hash. Instead, the hash could be copied and its values set to `true`. ```ruby h = {a: 1} # Now: Set.new(h.keys) # => Set[:a] # After h.key_set # => Set[:a], efficiently. ``` -- https://bugs.ruby-lang.org/

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