2.6.0

esolang-box 2.6.0 Release Notes

New Languages

16 new language boxes have been added in this release.

A

• Added A, a joke language by snuke designed to write programs with minimal separators, where all variable and function names must be single letters

BASIC (FreeBASIC)

• Added FreeBASIC 1.10.1, a free BASIC compiler compatible with QuickBASIC

bc / dc

• Added bc (GNU bc 1.08.2), an arbitrary-precision calculator language
• Added dc (GNU dc 1.5.2), a stack-based reverse-polish calculator

Bespoke

• Added Bespoke, an imperative esoteric language by WinslowJosiah with flexible syntax based on word lengths, loosely based on the author's earlier language Poetic

CheLang

• Added CheLang, an esoteric language written in Argentine Spanish slang ("che" is a common Argentine colloquial expression)

Factor

• Added Factor 0.100, a practical stack-based language

Foldy

• Added Foldy, a 2D stack-based esoteric language where code starts as a 1D sequence and can be "folded" into two dimensions using { and } commands

Nibbles

• Added Nibbles, a code golf language where programs are encoded as nibbles (4-bit values)

Pikt

• Added Pikt, a pixel-based dynamically typed esoteric language where programs are written as color-coded images; it compiles to native executables via the Kotlin compiler

気 (Qi)

• Added 気 (Qi), a lightweight, fast programming language by AnonymousAAArdvark whose keywords and syntax are written in Chinese characters

Q# (QDK)

• Added Q#, Microsoft's quantum programming language using the QDK runtime

Solidity

• Added Solidity, an object-oriented language for writing Ethereum smart contracts, using Foundry as the runtime

Terra

• Added Terra, a low-level systems programming language that is meta-programmed by Lua

Uiua

• Added Uiua, a tacit (point-free) array programming language

Vala

• Added Vala, an object-oriented language targeting the GLib/GNOME ecosystem, compiled to C

---

Language Runtime Upgrades

coq → Rocq

• The Coq proof assistant has been officially renamed to Rocq; the box display name and opam repository have been updated accordingly
• Upgraded from Coq 8.x (via coq-io-system) to Rocq 9.2.0 (rocq-core + rocq-stdlib)
• The underlying OCaml version was upgraded from 4.10.0 to 4.14.2
• Programs are now fully self-contained: the previous dependency on io_header.v and tail.v helper files has been removed, and both hello and cat test programs have been rewritten to use Rocq's standard I/O directly

befunge98

• Upgraded cfunge from 0.9.0 to 1.001 (migrated from SourceForge tarball to the GitHub repository)

compile-time-typescript

• Bumped compile-time-typescript from 1.4.0 to 1.4.1

zig

• Upgraded Zig from 0.10.1 to 0.16.0

---

Base Image Upgrades

base

• Upgraded base Alpine Linux from 3.22.4 to 3.23.4

ubuntu-base

• Added the time package to the Ubuntu base image, making the /usr/bin/time utility available in all Ubuntu-based language containers

---

Re-enabled Languages

perl1

• Perl 1.0 has been re-enabled after being disabled since version 2.4.0
• Fixed the build for GCC 14: patched stab.c to replace the deprecated sys_errlist/sys_nerr idiom with strerror(), and added -std=gnu89 to the compiler flags

---

Bug Fixes

brainfuck-esotope

• Migrated the base image from esolang/python2 to esolang/rust; esotope-bfc is now built from source using Cargo and installed as a native binary, removing the Python 2 dependency
• Fixed the disasm and script paths to use the new /usr/local/bin/esotope-bfc binary

function2d (Funciton)

• Fixed the language display name: corrected the spelling from "Function" to "Funciton" (the intentional misspelling used by the language)
• Renamed asset files from .function extension to .fnc to match the canonical file extension

piet

• Replaced the Hello World program with Thomas Schoch's canonical Pikt sample
• Corrected the expected output from "Hello, World!" to "Hello, world!\n" to match the program's actual output

snowman

• Updated the repository URL and credits from the old KeyboardFire/snowman-lang to tckmn/snowman-lang, following the maintainer's GitHub rename

c-gcc

• Updated GCC invocation to use -fpermissive -Wno-error -Wno-implicit -Wno-int-conversion -w instead of -Wall, improving compatibility with a wider range of C programs
• Added a new cat-golfed test case

streem

• Applied source-level patches to fix a function-signature mismatch (node_pattern_new) that caused build failures with newer GCC versions

---

Disassembly Tests

Automated disassembly tests have been added for 11 language boxes that already had disassembly support (disasm: true). These tests verify that the /root/disasm script produces the expected human-readable representation:

Language	Test file
brainfuck-esomer	hello.bf
brainfuck-esotope	hello.bf
fugue	hello.mid
hexagony	cat.hxg
produire	sjis.rdr
pure-folders	hello.tar
starry	hello.starry
unreadable	hello.unreadable
vim	disasm-test.vim
whitespace	hello.ws
z80	hello.z8b

---

Internal Cleanups

The following changes are internal only (build fixes, dependency updates, repository reorganization) with no user-visible behavior change:

Language / Component	Change
scripts/	Moved build.rb, push.rb, and box_readme.md.erb into a scripts/ subdirectory; added scripts/generate-matrix.rb and scripts/utils.rb
CI workflow	Removed asdf setup; streamlined Ruby installation; added test report and Shields.io badge jobs to CI
box.yaml schema	Fixed schema to require expected or expected_file in test cases; added expected_file and options properties
docker-bake.hcl	Switched to multiline HCL list format to reduce merge conflicts
.vscode/	Added VSCode extension recommendations and YAML schema settings for box.yaml editing
aheui	Parallelized build (make -j$(nproc))
alphabeta	Parallelized build
apl	Parallelized build
bash-pure	Parallelized jailkit build
befunge93	Parallelized build
brainfuck-bfi	Added ESOLANG_BOX_VERSION env var (previously absent from this image's Dockerfile)
cmm	Parallelized all four sub-builds
cobol	Added -fpermissive -std=gnu17 CFLAGS to fix build with Alpine 3.23's GCC
cubically	Parallelized build
cyclicbrainfuck	Parallelized build
fish-shell-pure	Parallelized jailkit build
glass	Parallelized build
goruby	Parallelized build
imagemagick	Parallelized build
intercal	Pinned GCC to 14.2.0-r6 from Alpine 3.22 to fix build regression with Alpine 3.23
lolcode	Migrated CMake invocation to modern cmake --build style; added -DCMAKE_POLICY_VERSION_MINIMUM=3.5
olang	Parallelized build
python1	Parallelized build
python2	Pinned GCC to 14.2.0-r6 from Alpine 3.22 to fix build regression with Alpine 3.23
rapira	Parallelized build (was -j5)
rescript	Pinned GCC to 14.2.0-r6 from Alpine 3.22 to fix build regression with Alpine 3.23
ruby0.49	Parallelized build
simula	Added cat test case; parallelized build
snobol	Parallelized build
snowman	Parallelized build
squared-cool	Parallelized build
streem	Parallelized build
verilog	Parallelized build (was -j5)
vlang	Fixed ENV syntax (VFLAGS assignment); parallelized build
wat	Parallelized build (was -j5)
whitespace	Parallelized both sub-builds
wierd	Parallelized build
wren	Parallelized build
z80	Parallelized build
zsh-pure	Parallelized build
befunge98, intercal, rescript, vlang, and others	Added missing credits information in box.yaml

2.5.0

esolang-box 2.5.0 Release Notes

Base Image Upgrades

base

• Upgraded base Alpine Linux from 3.19 to 3.22.4
• Removed bundled AWS CLI from the base image

ubuntu-base

• Upgraded Ubuntu base from jammy (22.04) to resolute (26.04)
• Removed bundled AWS CLI from the ubuntu-base image

dotnet-base

• Upgraded .NET SDK from 7.0.203 to 10.0.202

---

Language Runtime Upgrades

ruby

• Upgraded Ruby from 3.2.0 to 4.0.2

ruby-trunk

• Updated Ruby development snapshot to track the 4.0-dev branch

goruby

• Upgraded the underlying Ruby from 3.2.0 to 4.0.2

ballerina

• Upgraded Ballerina from 1.2.13 to 2201.13.2 (Swan Lake series)
• Upgraded Java runtime from OpenJDK 8 to OpenJDK 21
• The runner command changed from ballerina run to bal run to match the new release

c-gcc

• Upgraded C standard from C99 to C23 (-std=c23)

cpp-clang

• Upgraded Clang from 11 to 22
• Upgraded C++ standard from c++2a to c++2c
• Added -fconstexpr-depth=1024, -fconstexpr-steps=524288, and -fexperimental-library flags, allowing more complex constexpr programs

cpp-compile-time-clang

• Updated to use Clang 22 (following cpp-clang upgrade)

fsharp-dotnet

• Updated to target .NET 10 framework
• Improved startup time by pre-building the project template at image build time instead of creating a new project on each run

function2d (Funciton)

• Migrated runtime from Mono to .NET 10; Mono is no longer required
• Updated repository source to Codeberg

java

• Upgraded OpenJDK from 17 to 25

kotlin

• Upgraded Kotlin compiler from 1.9.23 to 2.3.20

llvm-ir

• Upgraded LLVM from 15 to 20

php

• Upgraded PHP from 8.1 to 8.5

ring

• Upgraded Ring from 1.14 to 1.22

snobol

• Upgraded SNOBOL4 (CSNOBOL4) from 2.3.1 to 2.3.3

swift

• Replaced the deprecated swiftenv installer with swiftly (the official Swift toolchain installer)
• Updated runtime dependencies for the new Swift release

verilog

• Upgraded Icarus Verilog from v12 to v13

---

Bug Fixes

imagemagick

• Updated ImageMagick to the latest release
• Fixed spurious list prefix in output that appeared in the previous version

mines

• Now installs the mines-esolang package via pip for a cleaner execution path

encapsulation / functional / transceternal

• Fixed I/O handling to correctly pass bit-level binary data to the interpreter (following @hakerh400/esolangs upgrade from v1.3.4 to v1.4.18)

ada

• Fixed: cat program no longer outputs a spurious \r (CRLF → LF)

alphabeta

• Fixed: cat program no longer outputs a spurious \r (CRLF → LF)

ed

• Fixed: cat program no longer outputs a spurious \r (CRLF → LF)

fetlang

• Fixed: cat program no longer outputs a spurious \r (CRLF → LF)

cmd

• Corrected test expectation: CMD cat output correctly uses \r\n line endings (Windows behavior)

---

Internal Cleanups

The following languages received internal-only changes (build fixes, dependency updates, asset renames) with no user-visible behavior change:

Language	Change
abc	Updated i386 ncurses library dependency for Ubuntu Resolute compatibility
apache2-rewrite	Asset files renamed; pip install flags updated
blc	Replaced Makefile-based build with explicit gcc command
brainfuck-bfi	Updated MAINTAINER to LABEL syntax; asset file renamed
calc	Asset files renamed
cobol	Removed libxml2 dependency; configure now uses --without-xml2
compile-time-typescript	Asset files renamed
concise-folders	Asset file renamed
coq	Asset files renamed
crystal	Updated GPG key import to modern keyring format
d-dmd	Fixed download mirror URL for D-APT repository
emojicode	Fixed libtinfo5 installation for Ubuntu Resolute compatibility
ezhil	Asset files renamed
ffb	Use shallow git clone
fish-shell-pure	Removed unnecessary library copies from jail
floater	Asset files renamed
fugue	Asset file renamed
i4004asm	Asset files renamed
irc	Updated to use php85 (following PHP upgrade)
js-rhino	Asset files renamed
lolcode	Added readline-dev build dependency
octave	Octave is now available in the main Alpine repository (no edge repo needed)
osecpu-aska	Fixed compiler warning in ASKA assembler build
picfunge	Asset files renamed
piet	Asset files renamed
powershell	Updated Microsoft APT repository GPG key import to modern format
pure-folders	Asset file renamed; use shallow git clone
python1	Multiple source patches for GCC compatibility (newer Alpine)
python2	Asset file renamed; use shallow git clone for pyenv
python3	Now pulls from Alpine edge repository for the latest Python 3
qlb	Updated jsdom API call from sendTo to forwardTo
rescript	Removed unnecessary build dependencies
riscv	Asset files renamed
ruby0.49	Asset files renamed
ruby1	Fixed build under newer GCC by passing -std=gnu89
simula	Fixed build with -std=gnu89 for newer GCC
sqlite3	Asset files renamed
taxi	Use shallow git clone
ubergenes	Use shallow git clone
velato	Asset file renamed
vlang	Asset files renamed; use shallow git clone
width	Suppress Python DeprecationWarnings in output
wordcpu	Updated GCC flags for C89 compatibility
x86asm-nasm	Asset files renamed