First idea on dependency handling

I chose this approach, since we cannot expect users to run our programs
inside a docker container or a micromamba/mise managed environment.

Author: furtib

.dependencies/clear.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# Get the absolute location of this script
+THIS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+
+rm -rf $THIS_DIR/bin
+rm -rf $THIS_DIR/include
+rm -rf $THIS_DIR/lib
+rm -rf $THIS_DIR/libexec
+rm -rf $THIS_DIR/local
+rm -rf $THIS_DIR/share
+rm -rf $THIS_DIR/venv

.dependencies/init.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+# Get the absolute location of this script
+THIS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+
+LLVM_VERSION="21.1.0"
+LLVM_URL="https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/LLVM-${LLVM_VERSION}-Linux-X64.tar.xz"
+TARBALL=$(basename "$LLVM_URL")
+
+# 1. Check if llvm is already present
+if [ ! -x "$THIS_DIR/bin/clang" ]; then
+    echo "LLVM not found in $THIS_DIR/bin. Downloading..."
+    curl -LO "$LLVM_URL" -o "$TARBALL"
+    
+    echo "Extracting LLVM directly into $THIS_DIR (this may take a moment)..."
+    tar -xf "$TARBALL" -C "$THIS_DIR" --strip-components=1
+    
+    rm "$TARBALL"
+    echo "Setup complete."
+else
+    echo "LLVM tools already present in $THIS_DIR/bin."
+fi
+
+# Create virtual python environment
+python3 -m venv $THIS_DIR/venv
+
+# Add bin to PATH
+export PATH="$THIS_DIR/bin:$PATH"
+source $THIS_DIR/venv/bin/activate
+
+pip3 install codechecker pytest pylint
+
+echo "Added $THIS_DIR/bin and $THIS_DIR/venv/bin to PATH."
+
+# Verify it works
+which pylint
+which pytest
+which CodeChecker
+which clang
+which clang-tidy
+which diagtool
+which clang-extdef-mapping
+which python3

.gitignore

@@ -20,9 +20,13 @@ venv
 .ci/micromamba/bin/
 .ci/micromamba/micromamba/
 
-# Ignore test specific bazelversion files
-test/unit/external_repository/.bazelversion
-test/unit/external_repository/third_party/my_lib/.bazelversion
+# Ignore manual environment artifacts
+.dependencies/bin/
+.dependencies/include/
+.dependencies/lib/
+.dependencies/libexec/
+.dependencies/local/
+.dependencies/share/
 
 # Ignore Bazel specific files
 .bazelversion

run_tests.sh

@@ -1,8 +1,15 @@
 #!/usr/bin/env bash
-# This script currently assumes that the user have set up their environment.
+# This script currently assumes that the user have bazel
+# set up inside their environment.
 # This means users using bazelisk have set their bazel version.
 # Either with the environment variable: USE_BAZEL_VERSION
-# or with the .bazelversion file.
+# or with a .bazelversion file.
+
+# Get the absolute location of this script
+THIS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+# We handle llvm and python dependencies here
+source $THIS_DIR/.dependencies/init.sh
+
 pylint .
 bazel test //...
 pytest test/