From 9fda7e6130b00887f5eb6212710cc265cb3c0c28 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Mon, 12 Jan 2026 19:01:53 +0000
Subject: [PATCH 1/2] feat(ty): init

Generated using boilerplate templates.
---
 src/ty/devcontainer-feature.json |  18 ++++
 src/ty/install.sh                |  21 ++++
 src/ty/library_scripts.sh        | 173 +++++++++++++++++++++++++++++++
 test/ty/scenarios.json           |  16 +++
 test/ty/test.sh                  |   9 ++
 test/ty/test_debian.sh           |   9 ++
 test/ty/test_specific_version.sh |   9 ++
 7 files changed, 255 insertions(+)
 create mode 100644 src/ty/devcontainer-feature.json
 create mode 100755 src/ty/install.sh
 create mode 100644 src/ty/library_scripts.sh
 create mode 100644 test/ty/scenarios.json
 create mode 100755 test/ty/test.sh
 create mode 100755 test/ty/test_debian.sh
 create mode 100755 test/ty/test_specific_version.sh

diff --git a/src/ty/devcontainer-feature.json b/src/ty/devcontainer-feature.json
new file mode 100644
index 000000000..77c38b5cc
--- /dev/null
+++ b/src/ty/devcontainer-feature.json
@@ -0,0 +1,18 @@
+{
+    "id": "ty",
+    "version": "1.0.0",
+    "name": "ty (via Github Releases)",
+    "documentationURL": "http://github.com/devcontainers-extra/features/tree/main/src/ty",
+    "description": "An extremely fast Python type checker and language server, written in Rust.",
+    "options": {
+        "version": {
+            "default": "latest",
+            "description": "Select the version to install.",
+            "proposals": [
+                "latest"
+            ],
+            "type": "string"
+        }
+    },
+    "installsAfter": []
+}
diff --git a/src/ty/install.sh b/src/ty/install.sh
new file mode 100755
index 000000000..e417b490c
--- /dev/null
+++ b/src/ty/install.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -e
+
+source ./library_scripts.sh
+
+# nanolayer is a cli utility which keeps container layers as small as possible
+# source code: https://github.com/devcontainers-extra/nanolayer
+# `ensure_nanolayer` is a bash function that will find any existing nanolayer installations,
+# and if missing - will download a temporary copy that automatically get deleted at the end
+# of the script
+ensure_nanolayer nanolayer_location "v0.5.6"
+
+# Example nanolayer installation via devcontainer-feature
+$nanolayer_location \
+    install \
+    devcontainer-feature \
+    "ghcr.io/devcontainers-extra/features/gh-release:1" \
+    --option repo='astral-sh/ty' --option binaryNames='ty' --option version="$VERSION"
+
+echo 'Done!'
diff --git a/src/ty/library_scripts.sh b/src/ty/library_scripts.sh
new file mode 100644
index 000000000..f6d0760d7
--- /dev/null
+++ b/src/ty/library_scripts.sh
@@ -0,0 +1,173 @@
+#!/usr/bin/env bash
+
+clean_download() {
+    # The purpose of this function is to download a file with minimal impact on container layer size
+    # this means if no valid downloader is found (curl or wget) then we install a downloader (currently wget) in a
+    # temporary manner, and making sure to
+    # 1. uninstall the downloader at the return of the function
+    # 2. revert back any changes to the package installer database/cache (for example apt-get lists)
+    # The above steps will minimize the leftovers being created while installing the downloader
+    # Supported distros:
+    #  debian/ubuntu/alpine
+
+    url=$1
+    output_location=$2
+    tempdir=$(mktemp -d)
+    downloader_installed=""
+
+    function _apt_get_install() {
+        tempdir=$1
+
+        # copy current state of apt list - in order to revert back later (minimize contianer layer size)
+        cp -p -R /var/lib/apt/lists $tempdir
+        apt-get update -y
+        apt-get -y install --no-install-recommends wget ca-certificates
+    }
+
+    function _apt_get_cleanup() {
+        tempdir=$1
+
+        echo "removing wget"
+        apt-get -y purge wget --auto-remove
+
+        echo "revert back apt lists"
+        rm -rf /var/lib/apt/lists/*
+        rm -r /var/lib/apt/lists && mv $tempdir/lists /var/lib/apt/lists
+    }
+
+    function _apk_install() {
+        tempdir=$1
+        # copy current state of apk cache - in order to revert back later (minimize contianer layer size)
+        cp -p -R /var/cache/apk $tempdir
+
+        apk add --no-cache wget
+    }
+
+    function _apk_cleanup() {
+        tempdir=$1
+
+        echo "removing wget"
+        apk del wget
+    }
+    # try to use either wget or curl if one of them already installer
+    if type curl >/dev/null 2>&1; then
+        downloader=curl
+    elif type wget >/dev/null 2>&1; then
+        downloader=wget
+    else
+        downloader=""
+    fi
+
+    # in case none of them is installed, install wget temporarly
+    if [ -z $downloader ]; then
+        if [ -x "/usr/bin/apt-get" ]; then
+            _apt_get_install $tempdir
+        elif [ -x "/sbin/apk" ]; then
+            _apk_install $tempdir
+        else
+            echo "distro not supported"
+            exit 1
+        fi
+        downloader="wget"
+        downloader_installed="true"
+    fi
+
+    if [ $downloader = "wget" ]; then
+        wget -q $url -O $output_location
+    else
+        curl -sfL $url -o $output_location
+    fi
+
+    # NOTE: the cleanup procedure was not implemented using `trap X RETURN` only because
+    # alpine lack bash, and RETURN is not a valid signal under sh shell
+    if ! [ -z $downloader_installed ]; then
+        if [ -x "/usr/bin/apt-get" ]; then
+            _apt_get_cleanup $tempdir
+        elif [ -x "/sbin/apk" ]; then
+            _apk_cleanup $tempdir
+        else
+            echo "distro not supported"
+            exit 1
+        fi
+    fi
+
+}
+
+ensure_nanolayer() {
+    # Ensure existance of the nanolayer cli program
+    local variable_name=$1
+
+    local required_version=$2
+    # normalize version
+    if ! [[ $required_version == v* ]]; then
+        required_version=v$required_version
+    fi
+
+    local nanolayer_location=""
+
+    # If possible - try to use an already installed nanolayer
+    if [[ -z "${NANOLAYER_FORCE_CLI_INSTALLATION}" ]]; then
+        if [[ -z "${NANOLAYER_CLI_LOCATION}" ]]; then
+            if type nanolayer >/dev/null 2>&1; then
+                echo "Found a pre-existing nanolayer in PATH"
+                nanolayer_location=nanolayer
+            fi
+        elif [ -f "${NANOLAYER_CLI_LOCATION}" ] && [ -x "${NANOLAYER_CLI_LOCATION}" ]; then
+            nanolayer_location=${NANOLAYER_CLI_LOCATION}
+            echo "Found a pre-existing nanolayer which were given in env variable: $nanolayer_location"
+        fi
+
+        # make sure its of the required version
+        if ! [[ -z "${nanolayer_location}" ]]; then
+            local current_version
+            current_version=$($nanolayer_location --version)
+            if ! [[ $current_version == v* ]]; then
+                current_version=v$current_version
+            fi
+
+            if ! [ $current_version == $required_version ]; then
+                echo "skipping usage of pre-existing nanolayer. (required version $required_version does not match existing version $current_version)"
+                nanolayer_location=""
+            fi
+        fi
+
+    fi
+
+    # If not previuse installation found, download it temporarly and delete at the end of the script
+    if [[ -z "${nanolayer_location}" ]]; then
+
+        if [ "$(uname -sm)" == "Linux x86_64" ] || [ "$(uname -sm)" == "Linux aarch64" ]; then
+            tmp_dir=$(mktemp -d -t nanolayer-XXXXXXXXXX)
+
+            clean_up() {
+                ARG=$?
+                rm -rf $tmp_dir
+                exit $ARG
+            }
+            trap clean_up EXIT
+
+            if [ -x "/sbin/apk" ]; then
+                clib_type=musl
+            else
+                clib_type=gnu
+            fi
+
+            tar_filename=nanolayer-"$(uname -m)"-unknown-linux-$clib_type.tgz
+
+            # clean download will minimize leftover in case a downloaderlike wget or curl need to be installed
+            clean_download https://github.com/devcontainers-extra/nanolayer/releases/download/$required_version/$tar_filename $tmp_dir/$tar_filename
+
+            tar xfzv $tmp_dir/$tar_filename -C "$tmp_dir"
+            chmod a+x $tmp_dir/nanolayer
+            nanolayer_location=$tmp_dir/nanolayer
+
+        else
+            echo "No binaries compiled for non-x86-linux architectures yet: $(uname -m)"
+            exit 1
+        fi
+    fi
+
+    # Expose outside the resolved location
+    declare -g ${variable_name}=$nanolayer_location
+
+}
diff --git a/test/ty/scenarios.json b/test/ty/scenarios.json
new file mode 100644
index 000000000..ef48409c0
--- /dev/null
+++ b/test/ty/scenarios.json
@@ -0,0 +1,16 @@
+{
+    "test_debian": {
+        "image": "mcr.microsoft.com/devcontainers/base:debian",
+        "features": {
+            "ty": {}
+        }
+    },
+    "test_specific_version": {
+        "image": "mcr.microsoft.com/devcontainers/base:debian",
+        "features": {
+            "ty": {
+                "version": "0.0.10"
+            }
+        }
+    }
+}
diff --git a/test/ty/test.sh b/test/ty/test.sh
new file mode 100755
index 000000000..c433ffc9f
--- /dev/null
+++ b/test/ty/test.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "ty is installed" ty --version
+
+reportResults
diff --git a/test/ty/test_debian.sh b/test/ty/test_debian.sh
new file mode 100755
index 000000000..c433ffc9f
--- /dev/null
+++ b/test/ty/test_debian.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "ty is installed" ty --version
+
+reportResults
diff --git a/test/ty/test_specific_version.sh b/test/ty/test_specific_version.sh
new file mode 100755
index 000000000..5d5af0ad9
--- /dev/null
+++ b/test/ty/test_specific_version.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "ty version is equal to 0.0.10" sh -c "ty --version | grep '0.0.10'"
+
+reportResults

From 629d891408cf6bd6f4df6d2145e4fb685f3a5916 Mon Sep 17 00:00:00 2001
From: koralowiec <36413794+koralowiec@users.noreply.github.com>
Date: Mon, 12 Jan 2026 20:05:23 +0100
Subject: [PATCH 2/2] feat(ty): add astral-sh.ty extension

---
 src/ty/devcontainer-feature.json | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/ty/devcontainer-feature.json b/src/ty/devcontainer-feature.json
index 77c38b5cc..ba183c261 100644
--- a/src/ty/devcontainer-feature.json
+++ b/src/ty/devcontainer-feature.json
@@ -14,5 +14,12 @@
             "type": "string"
         }
     },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "astral-sh.ty"
+            ]
+        }
+    },
     "installsAfter": []
 }