358 lines
11 KiB
Markdown
358 lines
11 KiB
Markdown
# NIP Build Flow - Automatic Detection and Bootstrap
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## Overview
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This document explains how NIP automatically detects, bootstraps, and builds packages from source.
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## Build Flow Diagram
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```
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User runs: nip build <package> +flags --source=gentoo
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↓
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┌─────────────────────────────────────────────────────────┐
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│ 1. Validate Package Name │
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│ - Check for safe characters │
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│ - Prevent command injection │
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└────────────────┬────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────┐
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│ 2. Determine Source │
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│ - If --source specified: use that │
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│ - If "auto": detect available sources │
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│ - Priority: Nix > PKGSRC > Gentoo │
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└────────────────┬────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────┐
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│ 3. Check if Build Tools Available │
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│ - Check system: /nix, /usr/pkgsrc, /usr/bin/emerge │
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│ - Check NIP-installed: ~/.local/share/nip/build-tools│
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└────────────────┬────────────────────────────────────────┘
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↓
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┌───────┴───────┐
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│ │
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Tools Found Tools Missing
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│ │
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↓ ↓
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┌────────┐ ┌──────────────────────────────────┐
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│ Build │ │ 4. Offer Bootstrap Options │
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│ Package│ │ 1. Install minimal tools │
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└────────┘ │ 2. Use container (Podman) │
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│ 3. Manual installation │
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│ 4. Try different source │
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└────────────┬─────────────────────┘
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↓
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┌──────────┴──────────┐
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│ │
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User Choosess
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Option 1 Option 2
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│ │
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↓ ↓
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┌──────────────────┐ ┌─────────────────┐
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│ 5a. Bootstrap │ │ 5b. Container │
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│ Tools │ │ Build │
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│ │ │ │
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│ - Fetch recipes │ │ - Detect runtime│
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│ - Download bins │ │ - Pull image │
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│ - Install │ │ - Mount dirs │
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│ - Verify │ │ - Run emerge │
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└────────┬─────────┘ └────────┬────────┘
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│ │
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└──────────┬───────────┘
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↓
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┌──────────────────────┐
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│ 6. Build Package │
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│ - Parse variants │
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│ - Run build │
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│ - Extract │
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└──────────┬───────────┘
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↓
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┌──────────────────────┐
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│ 7. Install to CAS │
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│ - Calculate hash │
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│ - Store in CAS │
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│ - Create symlinks │
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└──────────────────────┘
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```
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## Detailed Steps
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### Step 1: Source Detection
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**Code:** `build_commands.nim:buildCommand()`
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```nim
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if selectedSource == "auto":
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# Check in priority order
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if dirExists("/nix") or isToolInstalled(bttNix):
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selectedSource = "nix"
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elif dirExists("/usr/pkgsrc") or isToolInstalled(bttPkgsrc):
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selectedSource = "pkgsrc"
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elif fileExists("/usr/bin/emerge") or isToolInstalled(bttGentoo):
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selectedSource = "gentoo"
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else:
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# No source available - offer bootstrap
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promptForBootstrap()
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```
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**What it checks:**
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- System installations: `/nix`, `/usr/pkgsrc`, `/usr/bin/emerge`
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- NIP installations: `~/.local/share/nip/build-tools/<tool>/`
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### Step 2: Bootstrap Detection
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**Code:** `bootstrap.nim:handleMissingTool()`
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```nim
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proc handleMissingTool*(toolType: BuildToolType, autoBootstrap: bool = false): bool =
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# Check if already installed
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if isToolInstalled(toolType):
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return true
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# Check if available on system
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if isSystemToolAvailable(toolType):
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return true
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# Auto-bootstrap mode
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if autoBootstrap:
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let installResult = installMinimalTools(toolType)
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return installResult.success
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# Interactive mode - prompt user
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let choice = promptBootstrapOptions(toolType)
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# ... handle user choice
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```
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**What it does:**
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1. Checks NIP-installed tools
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2. Checks system tools
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3. If neither found, prompts user
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4. Offers 4 options (install/container/manual/different)
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### Step 3: Container Fallback
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**Code:** `container_builder.nim:buildWithContainerFallback()`
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```nim
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proc buildWithContainerFallback*(packageName: string, variantFlags: seq[string]): ContainerBuildResult =
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# Detect container runtime
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let runtime = detectContainerRuntime()
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if runtime == crNone:
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return error("No container runtime available")
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# Pull Gentoo image
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pullImage("gentoo/stage3:latest")
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# Build in container
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buildGentooInContainer(runtime, packageName, variantFlags)
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```
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**What it does:**
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1. Detects Podman (preferred) or Docker
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2. Pulls Gentoo container image
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3. Mounts build directory
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4. Runs emerge with USE flags
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5. Extracts artifacts
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### Step 4: Recipe-Based Installation
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**Code:** `bootstrap.nim:installMinimalGentoo()`
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```nim
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proc installMinimalGentoo*(): BootstrapResult =
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# Initialize managers
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let recipeManager = newRecipeManager()
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let downloadManager = newDownloadManager()
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let installManager = newInstallationManager()
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# Fetch recipes from Git
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if not recipeManager.hasRecipe("gentoo"):
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recipeManager.fetchRecipes()
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# Load recipe
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let recipe = recipeManager.loadRecipe("gentoo")
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# Download binaries and archives
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for binary in recipe.binaries:
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downloadManager.downloadFile(binary.url, binary.checksum)
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# Install
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installManager.executeScript(recipe.install.script)
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installManager.verifyInstallation(recipe.install.verifyScript)
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```
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**What it does:**
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1. Fetches recipes from Git repository
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2. Downloads binaries with checksum verification
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3. Extracts archives
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4. Runs installation scripts
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5. Verifies installation
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6. Automatic rollback on failure
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## Decision Tree
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### When User Runs: `nip build vim +python --source=gentoo`
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```
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Is Gentoo installed?
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├─ Yes → Build with Gentoo
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└─ No → Is Podman/Docker available?
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├─ Yes → Offer container build
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└─ No → Offer to install Gentoo tools
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├─ User chooses install → Bootstrap Gentoo
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│ ├─ Fetch recipes
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│ ├─ Download binaries
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│ ├─ Install
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│ └─ Build package
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└─ User chooses manual → Show instructions
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```
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### When User Runs: `nip build vim` (auto-detect)
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```
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Check available sources in priority order:
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├─ Nix available? → Use Nix
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├─ PKGSRC available? → Use PKGSRC
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├─ Gentoo available? → Use Gentoo
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└─ None available → Offer bootstrap
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├─ Podman available? → Suggest container build
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└─ Nothing available → Show installation instructions
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```
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## Automatic Features
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### 1. Source Auto-Detection ✅
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**Implemented:** Yes
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```bash
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# NIP automatically chooses best available source
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nip build vim
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# Output:
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# 🔍 Source: Nix (auto-detected)
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```
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### 2. Bootstrap Prompting ✅
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**Implemented:** Yes
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```bash
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# NIP prompts when tools are missing
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nip build vim --source=gentoo
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# Output:
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# ⚠️ Gentoo not found
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# NIP can help you set up Gentoo builds:
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# 1. 🚀 Install minimal tools via NIP (recommended)
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# ...
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```
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### 3. Container Detection ✅
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**Implemented:** Yes (in container_builder.nim)
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```bash
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# NIP detects Podman/Docker automatically
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nip build vim --source=gentoo
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# If no tools but Podman available:
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# 🐳 Using Podman container for build
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```
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### 4. Recipe Fetching ✅
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**Implemented:** Yes
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```bash
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# NIP automatically fetches recipes when needed
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nip bootstrap install gentoo
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# Output:
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# 📥 Fetching recipes...
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# ✅ Recipes fetched successfully
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```
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### 5. Checksum Verification ✅
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**Implemented:** Yes
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```bash
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# NIP verifies all downloads with Blake2b-512
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# Automatic retry on checksum mismatch
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# No user intervention needed
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```
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## Integration Status
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### ✅ Fully Integrated
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- Source detection
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- Bootstrap prompting
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- Recipe system
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- Download with verification
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- Installation with rollback
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- CLI commands
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### 🔧 Partially Integrated
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- Container builds (module ready, needs CLI integration)
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- Progress bars (module ready, needs integration)
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### 📋 Planned
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- Arch package grafting
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- Binary cache
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- Automatic updates
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## For Arch Linux Users
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### Current Workflow
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```bash
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# 1. Install Podman (one-time setup)
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sudo pacman -S podman
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podman system migrate
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# 2. Build packages with custom features
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nip build vim +python+ruby --source=gentoo
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# → NIP detects Podman
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# → Builds in container automatically
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# → No Gentoo installation needed!
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# 3. Enjoy optimized packages
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vim --version | grep python # Python support enabled
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```
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### Future Workflow (When Arch Grafting Added)
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```bash
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# Fast: Graft from Arch repos
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nip install firefox # 5 seconds
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# Custom: Build from Gentoo
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nip build vim +python --source=gentoo # 5 minutes
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# Best of both worlds!
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```
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## Summary
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**Yes, NIP automatically detects and handles everything!**
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✅ **Detects** available build tools
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✅ **Prompts** for bootstrap when needed
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✅ **Offers** container builds as fallback
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✅ **Downloads** and verifies binaries
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✅ **Installs** with automatic rollback
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✅ **Builds** with your custom flags
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**For Arch Linux users:** Install Podman and start building today! No manual setup needed.
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```bash
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sudo pacman -S podman
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nip build <package> +flags --source=gentoo
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```
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**NIP handles the rest automatically!** 🚀
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