Add config update review and publish v0.1.1 bundle

README.md

@@ -37,7 +37,7 @@ The existing installation has not been changed by creating this repo.
 ## Start
 
 ```sh
-git clone --branch v0.1.0 https://git.fiwlabs.dev/fiwdev/Fiw-Gentoo-Dots.git
+git clone --branch v0.1.1 https://git.fiwlabs.dev/fiwdev/Fiw-Gentoo-Dots.git
 cd Fiw-Gentoo-Dots
 ./install
 ```
@@ -47,12 +47,14 @@ configs, kernel/bootloader choices, individual Flatpaks, optional services and
 a final preview. Enter saves without applying. `r` runs the full restore;
 `a` restores configs, `i` installs Portage packages, `f` installs Flatpaks,
 `v` enables selected services and `b` deploys the selected bootloader.
-`u` opens config backups for preview and restoration. Apply actions finish
+`e` updates configs while preserving local edits; `p` opens pending changes
+for a diff and individual acceptance. `u` opens config backups for preview
+and restoration. Apply actions finish
 with a [combined report](docs/reports.md) of outcomes and remaining setup.
 Linux amd64 includes a verified prebuilt TUI; Git and Python 3.11+ are enough.
 Go 1.24+ is the source fallback for changed frontend code or other platforms.
 Saved selections are reused on subsequent launches. See the
-[v0.1.0 snapshot and build instructions](docs/releases.md).
+[snapshot and build instructions](docs/releases.md).
 
 For a preview without building the TUI:
 
@@ -125,6 +127,8 @@ is also optional.
 
 Existing differences prompt apply-or-keep and get backups when replaced.
 Updates leave locally edited configs intact and write the proposal to `.new`.
+The TUI can [review and accept each proposal](docs/updates.md), backing up the
+current file and refusing proposals whose target changed since creation.
 KConfig patches preserve unrelated keys and groups; JSON patches preserve
 unrelated preferences and login data already on the target device.
 The TUI can [restore user config backups](docs/backups.md), with a preview,

VERSION

@@ -1 +1 @@
-0.1.0
+0.1.1

assets/bin/SHA256SUMS

@@ -1 +1 @@
-767c35da0b46eaa785fa20b2d008e8403aa64e46223e116228d6b4be91e6dfb5  fiw-dots-linux-amd64.gz
+a14492188be4cbf1bfdda2f793527b07c0168b2e0d36b7f268922a5cb7b0c08c  fiw-dots-linux-amd64.gz

assets/bin/tui.json

@@ -1,12 +1,12 @@
 {
-  "version": "0.1.0",
+  "version": "0.1.1",
-  "source_sha256": "df16d0f9960968f191147aa7c45ff1161b30616f7e545f7a28bae9dc038d026e",
+  "source_sha256": "92a1dc2a662d9ec71c0abec3b96078662268ab16f358be6d2617bbcc4baaf324",
   "binaries": {
     "linux-amd64": {
       "file": "fiw-dots-linux-amd64.gz",
-      "sha256": "32e133786d350016085741f1e4f15fae174977cb7cd63eae7999f97d3715c59b",
+      "sha256": "6da013a88843912b105f1e2a956cd094b22cfa853b5d9eeed3b2430c7f7ec798",
-      "gzip_sha256": "767c35da0b46eaa785fa20b2d008e8403aa64e46223e116228d6b4be91e6dfb5",
+      "gzip_sha256": "a14492188be4cbf1bfdda2f793527b07c0168b2e0d36b7f268922a5cb7b0c08c",
-      "size": 3555490
+      "size": 3559586
     }
   }
 }

cmd/dots/main.go

@@ -65,6 +65,15 @@ type backupsMsg struct {
 	choices []backupChoice
 	err     error
 }
+type proposalChoice struct {
+	ID     string `json:"id"`
+	Target string `json:"target"`
+	Status string `json:"status"`
+}
+type proposalsMsg struct {
+	choices []proposalChoice
+	err     error
+}
 type model struct {
 	repo                                 string
 	catalog                              catalog
@@ -73,6 +82,8 @@ type model struct {
 	stage, cursor, height, width, scroll int
 	preview, errorText, action, backupID string
 	done, loading                        bool
+	proposalID, proposalStatus           string
+	proposals                            []proposalChoice
 }
 
 func contains(values []string, target string) bool {
@@ -246,6 +257,24 @@ func (m model) backupPreview() tea.Cmd {
 		return previewMsg{string(output), err}
 	}
 }
+func (m model) loadProposals() tea.Cmd {
+	return func() tea.Msg {
+		output, err := exec.Command("python3", filepath.Join(m.repo, "lib", "rice.py"), "--list-proposals").CombinedOutput()
+		var choices []proposalChoice
+		if err == nil {
+			err = json.Unmarshal(output, &choices)
+		} else {
+			err = fmt.Errorf("%s", strings.TrimSpace(string(output)))
+		}
+		return proposalsMsg{choices, err}
+	}
+}
+func (m model) proposalPreview() tea.Cmd {
+	return func() tea.Msg {
+		output, err := exec.Command("python3", filepath.Join(m.repo, "lib", "rice.py"), "--proposal-plan", m.proposalID).CombinedOutput()
+		return previewMsg{string(output), err}
+	}
+}
 func (m model) previewLines() []string {
 	width := m.width
 	if width == 0 {
@@ -267,6 +296,13 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case previewMsg:
 		m.loading = false
 		m.preview = v.content
+		if m.stage == 9 && v.err == nil {
+			lines := strings.SplitN(v.content, "\n", 4)
+			m.proposalStatus = ""
+			if len(lines) > 2 {
+				m.proposalStatus = strings.TrimPrefix(lines[2], "Status: ")
+			}
+		}
 		if v.err != nil {
 			m.errorText = v.err.Error()
 		}
@@ -279,6 +315,16 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		for _, choice := range v.choices {
 			m.rows = append(m.rows, row{choice.ID, fmt.Sprintf("%s — %d files", choice.ID, choice.Count), false})
 		}
+	case proposalsMsg:
+		m.loading = false
+		m.rows = nil
+		m.proposals = v.choices
+		if v.err != nil {
+			m.errorText = v.err.Error()
+		}
+		for _, choice := range v.choices {
+			m.rows = append(m.rows, row{choice.ID, choice.ID + " [" + choice.Status + "]", false})
+		}
 	case tea.KeyMsg:
 		key := v.String()
 		if key == "ctrl+c" || key == "q" {
@@ -287,7 +333,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		if m.loading {
 			return m, nil
 		}
-		if m.stage == 5 || m.stage == 7 {
+		if m.stage == 5 || m.stage == 7 || m.stage == 9 {
 			switch key {
 			case "up", "k":
 				if m.scroll > 0 {
@@ -305,6 +351,11 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 					m.errorText = ""
 					return m, m.loadBackups()
 				}
+				if m.stage == 8 {
+					m.loading = true
+					m.errorText = ""
+					return m, m.loadProposals()
+				}
 			case "u":
 				if m.stage == 5 {
 					m.stage = 6
@@ -313,7 +364,15 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 					m.errorText = ""
 					return m, m.loadBackups()
 				}
-			case "enter", "s", "a", "i", "f", "v", "b", "r":
+			case "p":
+				if m.stage == 5 {
+					m.stage = 8
+					m.prepare()
+					m.loading = true
+					m.errorText = ""
+					return m, m.loadProposals()
+				}
+			case "enter", "s", "a", "e", "i", "f", "v", "b", "r":
 				if m.errorText == "" {
 					if m.stage == 7 {
 						if key != "enter" {
@@ -321,6 +380,12 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 						}
 						key = "u"
 					}
+					if m.stage == 9 {
+						if key != "enter" || (m.proposalStatus != "ready" && m.proposalStatus != "unchanged") {
+							return m, nil
+						}
+						key = "p"
+					}
 					m.done = true
 					m.action = key
 					return m, tea.Quit
@@ -328,7 +393,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			}
 			return m, nil
 		}
-		if m.stage == 6 {
+		if m.stage == 6 || m.stage == 8 {
 			switch key {
 			case "up", "k":
 				if m.cursor > 0 {
@@ -340,6 +405,14 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				}
 			case "enter":
 				if len(m.rows) > 0 && m.errorText == "" {
+					if m.stage == 8 {
+						m.proposalID = m.rows[m.cursor].id
+						m.proposalStatus = m.proposals[m.cursor].Status
+						m.stage = 9
+						m.scroll = 0
+						m.loading = true
+						return m, m.proposalPreview()
+					}
 					m.backupID = m.rows[m.cursor].id
 					m.stage = 7
 					m.scroll = 0
@@ -425,13 +498,13 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 func (m model) View() string {
 	const purple = "\033[38;2;157;143;217m"
 	const reset = "\033[0m"
-	titles := []string{"Preset", "Package sections", "Optional app configs", "Kernel, bootloader and extras", "Flatpaks and optional services", "Final preview", "Config backups", "Restore backup preview"}
+	titles := []string{"Preset", "Package sections", "Optional app configs", "Kernel, bootloader and extras", "Flatpaks and optional services", "Final preview", "Config backups", "Restore backup preview", "Pending config updates", "Config update diff"}
 	text := purple + "  Fiw-Gentoo-Dots\n" + reset + "  " + titles[m.stage] + "  ·  " + m.selection.Name + "\n\n"
 	budget := m.height - 10
 	if budget < 5 {
 		budget = 5
 	}
-	if m.stage == 5 || m.stage == 7 {
+	if m.stage == 5 || m.stage == 7 || m.stage == 9 {
 		if m.loading {
 			return text + "  Preparing preview…\n"
 		}
@@ -445,18 +518,27 @@ func (m model) View() string {
 		}
 		if m.stage == 7 {
 			text += "\n  ↑/↓ scroll · Esc back · Enter restore with confirmation · q cancel\n"
+		} else if m.stage == 9 {
+			if m.proposalStatus == "stale" {
+				text += "\n  Target changed: update configs again to create a fresh proposal.\n  ↑/↓ scroll · Esc back · q cancel\n"
 			} else {
-			text += "\n  ↑/↓ scroll · Esc back · Enter save · r full restore · a configs · i packages\n  f Flatpaks · v services · b bootloader · u config backups · q cancel\n"
+				text += "\n  ↑/↓ scroll · Esc back · Enter accept with confirmation · q cancel\n"
+			}
+		} else {
+			text += "\n  ↑/↓ scroll · Esc back · Enter save · r full restore · a configs · e update configs\n  i packages · f Flatpaks · v services · b bootloader\n  p pending updates · u config backups · q cancel\n"
 		}
 		if m.errorText != "" {
 			text += "  " + m.errorText + "\n"
 		}
 		return text
 	}
-	if m.stage == 6 && (m.loading || len(m.rows) == 0 || m.errorText != "") {
+	if (m.stage == 6 || m.stage == 8) && (m.loading || len(m.rows) == 0 || m.errorText != "") {
 		message := "No config backups yet. Backups are created when existing configs are replaced."
+		if m.stage == 8 {
+			message = "No pending config updates. Use e from the final preview to update configs."
+		}
 		if m.loading {
-			message = "Loading config backups…"
+			message = "Loading files…"
 		}
 		if m.errorText != "" {
 			message = m.errorText
@@ -482,6 +564,9 @@ func (m model) View() string {
 			cursor = "› "
 		}
 		line := "  " + cursor + mark + " " + r.label
+		if m.stage == 8 && m.width > 10 {
+			line = ansi.Truncate(line, m.width-2, "…")
+		}
 		if m.cursor == i {
 			line = purple + line + reset
 		}
@@ -490,6 +575,9 @@ func (m model) View() string {
 	if m.stage == 6 {
 		return text + "\n  ↑/↓ move · Enter preview backup · Esc back · q cancel\n"
 	}
+	if m.stage == 8 {
+		return text + "\n  ↑/↓ move · Enter preview diff · Esc back · q cancel\n"
+	}
 	return text + "\n  ↑/↓ move · Space select · Enter next · Esc back · q cancel\n"
 }
 
@@ -586,6 +674,12 @@ func main() {
 	case "a":
 		workflow = "configs"
 		actionErr = run("--apply-configs", false)
+	case "e":
+		workflow = "configs"
+		actionErr = run("--apply-configs", false, "--update")
+	case "p":
+		workflow = "proposal"
+		actionErr = run("--accept-proposal", false, final.proposalID)
 	case "i":
 		workflow = "packages"
 		actionErr = run("--install-packages", true)

cmd/dots/main_test.go

@@ -115,3 +115,51 @@ func TestPreviewCanScrollThroughLongRequirementLines(t *testing.T) {
 		t.Fatal("wrapped requirements cannot be scrolled into view")
 	}
 }
+
+func TestProposalNeedsDiffAndExplicitAcceptance(t *testing.T) {
+	m := model{stage: 5}
+	next, command := m.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'p'}})
+	m = next.(model)
+	if m.stage != 8 || command == nil || m.done {
+		t.Fatal("proposal key did not open the chooser")
+	}
+	next, _ = m.Update(proposalsMsg{choices: []proposalChoice{{ID: ".config/app.new", Target: ".config/app", Status: "ready"}}})
+	m = next.(model)
+	next, command = m.Update(tea.KeyMsg{Type: tea.KeyEnter})
+	m = next.(model)
+	if m.stage != 9 || command == nil || m.done {
+		t.Fatal("choosing a proposal must only open its diff")
+	}
+	next, _ = m.Update(previewMsg{content: "Config update proposal: .config/app.new\nTarget: .config/app\nStatus: ready\n\n-preview\n+proposal"})
+	m = next.(model)
+	next, _ = m.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'a'}})
+	m = next.(model)
+	if m.done {
+		t.Fatal("application key accepted a proposal")
+	}
+	next, _ = m.Update(tea.KeyMsg{Type: tea.KeyEnter})
+	m = next.(model)
+	if !m.done || m.action != "p" || m.proposalID != ".config/app.new" {
+		t.Fatal("explicit proposal acceptance was lost")
+	}
+}
+
+func TestProposalThatBecameStaleCannotBeAcceptedFromPreview(t *testing.T) {
+	m := model{stage: 9, proposalStatus: "ready", loading: true}
+	next, _ := m.Update(previewMsg{content: "Config update proposal: .config/app.new\nTarget: .config/app\nStatus: stale\n"})
+	m = next.(model)
+	next, command := m.Update(tea.KeyMsg{Type: tea.KeyEnter})
+	m = next.(model)
+	if m.done || command != nil || !strings.Contains(m.View(), "Target changed") {
+		t.Fatal("stale proposal was offered for acceptance")
+	}
+}
+
+func TestConfigUpdateIsASeparateAction(t *testing.T) {
+	m := model{stage: 5}
+	next, _ := m.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'e'}})
+	m = next.(model)
+	if !m.done || m.action != "e" {
+		t.Fatal("config update action was lost")
+	}
+}

docs/releases.md

@@ -1,5 +1,25 @@
 # Release snapshots
 
+## v0.1.1 — Config update review
+
+Adds **e** for config updates and **p** for pending changes in the final TUI
+preview. Each pending file has a diff and an acceptance prompt. Accepting
+backs up the current file and rechecks that it has not changed since the
+proposal was created. Manually edited proposals remain local preferences
+on future updates. Selected patches for shared KDE files produce one combined
+proposal containing both styling and shortcut adjustments.
+
+```sh
+git clone --branch v0.1.1 https://git.fiwlabs.dev/fiwdev/Fiw-Gentoo-Dots.git
+cd Fiw-Gentoo-Dots
+./install
+```
+
+The matching prebuilt Linux amd64 TUI is included in the
+[tag](https://git.fiwlabs.dev/fiwdev/Fiw-Gentoo-Dots/src/tag/v0.1.1) and
+[source archive](https://git.fiwlabs.dev/fiwdev/Fiw-Gentoo-Dots/archive/v0.1.1.tar.gz).
+See [config updates](updates.md) for the review flow and CLI commands.
+
 ## v0.1.0 — First restoration snapshot
 
 This tag captures the current KDE shortcuts and appearance, categorized

docs/reports.md

@@ -11,7 +11,7 @@ The report includes:
 - Installed, existing, skipped or failed user Flatpaks.
 - Enabled, missing or skipped service units.
 - Applied configs, preserved conflicts and pending `.new` proposals.
-- Boot deployment outcome or backup restoration outcome.
+- Boot deployment, backup restoration or config proposal acceptance outcome.
 - Missing config requirements and selected manual setup steps.
 
 A cancelled operation stops the full restore sequence. Completed earlier
@@ -37,6 +37,6 @@ sudo ./install --selection local/selection.json --run-id my-restore --install-pa
 ```
 
 Run the combined summary as your regular user. `--workflow configs`,
-`packages`, `flatpaks`, `services`, `boot` or `backup` limits the expected steps
+`packages`, `flatpaks`, `services`, `boot`, `backup` or `proposal` limits the expected steps
 when summarizing one action. Full restoration is the default. Without an
 explicit ID, separate CLI apply commands are separate runs.

docs/scripts.md

@@ -8,6 +8,7 @@
 | `lib/setup.py` | Stages missing overlays, installs selected user Flatpaks and enables selected service units | Called by the backend |
 | `lib/boot.py` | Detects the target ESP/root, previews/deploys Limine or GRUB, refreshes kernel menus | Boot action; copied as `fiw-dots-boot` on deployment |
 | `lib/backups.py` | Lists and previews user config backups, restores selected files and backs up their current versions | TUI backup action or backend commands |
+| `lib/proposals.py` | Lists pending config changes, previews diffs and accepts individual proposals after checking for newer edits | TUI pending updates action or backend commands |
 | `lib/reporting.py` | Correlates root/user steps, failures, skips and manual setup into one local summary | Runs after TUI apply actions; `--summary` for CLI use |
 | `fiw-shot` | Captures a region or monitor using Spectacle, copies it to the clipboard and offers Save/Edit through a notification | Installed with KDE shortcuts; `region` or `screen` argument |
 | `tools/capture.py` | Recaptures the explicit preference allowlist without copying full personal profiles | Maintenance command; review the diff |

docs/setup.md

@@ -96,7 +96,8 @@ Ark, Gwenview and Prism also have individually optional preferences. Their
 capture scope and the preview's package requirements are described in
 [app configs](app-configs.md). r2modman setup remains a manual step.
 
-Review Git changes before pulling updates, then restore your saved selection:
+Review Git changes before pulling updates, then open the TUI with your saved
+selection and press **e** at the final preview. The command-line equivalent is:
 
 ```sh
 ./install --selection local/selection.json --apply-configs --update
@@ -107,6 +108,7 @@ files. Replacements receive backups. Root Portage file conflicts ask before
 replacement and receive backups too. Reports and user backups live under
 `~/.local/state/Fiw-Gentoo-Dots`; system reports and backups live under
 `/var/lib/Fiw-Gentoo-Dots`.
+Use **p** to [review and accept pending config updates](updates.md) individually.
 Use the TUI's **u** action to [restore a user config backup](backups.md).
 
 ## Fiw tools

docs/updates.md

@@ -0,0 +1,48 @@
+# Review config updates
+
+After reviewing and pulling repository changes, launch `./install`. Your
+saved selection is reused. At the final preview, press **e** to update the
+selected configs. Locally edited files stay intact; the proposed content goes
+to a separate `.new` file. Existing proposals are retained, with a timestamp
+on subsequent proposals. Unchanged files are left alone. Other replacements
+still have apply-or-keep prompts and backups.
+
+Launch the TUI again and press **p** to browse pending proposals. Choose a
+file to see its diff, then press Enter to begin the acceptance prompt.
+Esc returns to the chooser. Acceptance defaults to keeping the current file.
+You can accept each app's changes separately.
+
+Pending files have these states:
+
+| State | Meaning |
+|---|---|
+| `ready` | The current file matches the version used to generate the proposal. |
+| `unchanged` | The current file already matches the proposal; acceptance clears that proposal. |
+| `stale` | The current file changed after proposal creation. Update configs again to generate a fresh proposal. |
+
+Acceptance rechecks the current file after confirmation. A newer edit stops
+acceptance and preserves both files. A proposal edited during confirmation
+also requires another review. Each replaced current file gets a backup
+available through **u**. Only the accepted proposal is removed. If you edit a
+proposal before accepting it, the resulting config is treated as a local
+preference on future updates.
+
+Close the affected app before accepting its config. KDE proposals require
+logging out of Plasma and running from a TTY. Shared KDE files combine all
+selected patches into one proposal, preserving unrelated keys.
+
+The CLI equivalents are:
+
+```sh
+./install --selection local/selection.json --apply-configs --update
+./install --list-proposals
+./install --proposal-plan '.config/kitty/kitty.conf.new'
+./install --accept-proposal '.config/kitty/kitty.conf.new'
+```
+
+Use the actual proposal ID shown by the list, including a timestamp if present.
+Run these as the target user. The list includes proposals recorded by this
+version of the installer. Older or manually created `.new` files remain on
+disk; updating again creates a recorded proposal for review without replacing
+those files. Proposal records live locally under
+`~/.local/state/Fiw-Gentoo-Dots/proposals.json`.

lib/launcher.py

@@ -74,7 +74,7 @@ def launch(repo=REPO):
         except (KeyError, ValueError, OSError, RuntimeError) as error:
             print('Prebuilt TUI unavailable: ' + str(error), file=sys.stderr)
     if not shutil.which('go'):
-        raise RuntimeError('Use the v0.1.0 snapshot for its prebuilt Linux amd64 TUI, or install Go 1.24+ for source builds. Python CLI commands such as ./install --plan remain available.')
+        raise RuntimeError('Use a tagged snapshot for its prebuilt Linux amd64 TUI, or install Go 1.24+ for source builds. Python CLI commands such as ./install --plan remain available.')
     print('Building the TUI from source with Go.', file=sys.stderr)
     cache.parent.mkdir(parents=True, exist_ok=True)
     version = (repo / 'VERSION').read_text().strip()

lib/proposals.py

@@ -0,0 +1,137 @@
+"""Review config update proposals and accept them without losing newer edits."""
+import difflib
+import json
+import os
+import re
+import shutil
+from pathlib import Path
+
+from backups import digest, stamp, user_state
+
+
+def registry(home):
+    path = user_state(home) / 'proposals.json'
+    return json.loads(path.read_text()) if path.is_file() else {}
+
+
+def save(home, entries):
+    path = user_state(home) / 'proposals.json'
+    path.parent.mkdir(parents=True, exist_ok=True)
+    temporary = path.with_name('.proposals-' + stamp())
+    temporary.write_text(json.dumps(entries, indent=2) + '\n')
+    temporary.chmod(0o600)
+    temporary.replace(path)
+
+
+def record(home, proposal, target, base_hash, configs):
+    entries = registry(home)
+    entries[str(proposal)] = {'target': str(target), 'base_sha256': base_hash,
+                              'proposed_sha256': digest(home / proposal),
+                              'configs': configs, 'created': stamp()}
+    save(home, entries)
+
+
+def inspect(home, proposal_id, allowed):
+    home = home.resolve()
+    entry = registry(home).get(proposal_id)
+    if not entry or entry.get('target') not in allowed:
+        raise RuntimeError('Unrecognized config proposal.')
+    target = entry['target']
+    if not re.fullmatch(re.escape(target) + r'\.new(?:\.[0-9]{8}T[0-9]{6}\.[0-9]+Z)?', proposal_id):
+        raise RuntimeError('Invalid config proposal path.')
+    candidate, destination = home / proposal_id, home / target
+    for path in (candidate, destination):
+        if not path.parent.resolve().is_relative_to(home) or (path.is_dir() and not path.is_symlink()):
+            raise RuntimeError('Unsafe config proposal or destination path.')
+    if not candidate.is_file() and not candidate.is_symlink():
+        raise FileNotFoundError('Config proposal no longer exists.')
+    current = digest(destination)
+    status = 'unchanged' if current == digest(candidate) else 'ready' if current == entry['base_sha256'] else 'stale'
+    return entry, candidate, destination, status
+
+
+def list_proposals(home, allowed):
+    result = []
+    for proposal_id in sorted(registry(home)):
+        # Accepted or manually removed proposal files are not pending.
+        try:
+            entry, _, _, status = inspect(home, proposal_id, allowed)
+        except FileNotFoundError:
+            continue
+        result.append({'id': proposal_id, 'target': entry['target'], 'status': status})
+    return result
+
+
+def preview(home, proposal_id, allowed):
+    entry, candidate, destination, status = inspect(home, proposal_id, allowed)
+    lines = ['Config update proposal: ' + proposal_id, 'Target: ' + entry['target'], 'Status: ' + status, '']
+    if status == 'stale':
+        lines += ['The target changed after this proposal was created.',
+                  'Run a config update to generate a fresh proposal. This one will be kept.', '']
+    if candidate.is_symlink() or destination.is_symlink():
+        lines += ['Current: ' + str(digest(destination)), 'Proposed: ' + str(digest(candidate))]
+    else:
+        current = destination.read_bytes() if destination.is_file() else b''
+        proposed = candidate.read_bytes()
+        try:
+            if b'\0' in current + proposed:
+                raise UnicodeError
+            diff = difflib.unified_diff(current.decode().splitlines(), proposed.decode().splitlines(),
+                                        fromfile=entry['target'], tofile=proposal_id, lineterm='')
+            lines += list(diff) or ['No content changes.']
+        except UnicodeError:
+            lines += ['Binary file: ' + str(len(current)) + ' -> ' + str(len(proposed)) + ' bytes.',
+                      'Current SHA256: ' + str(digest(destination)), 'Proposed SHA256: ' + str(digest(candidate))]
+    return '\n'.join(lines)
+
+
+def accept(home, proposal_id, allowed, ask, active_plasma):
+    if os.geteuid() == 0:
+        raise RuntimeError('Accept user config proposals as the target user, not root.')
+    home = home.resolve()
+    entry, candidate, destination, status = inspect(home, proposal_id, allowed)
+    if status == 'stale':
+        raise RuntimeError('The target changed since this proposal was created. Update configs again; the old proposal is preserved.')
+    if allowed[entry['target']].get('kde') and active_plasma(home) and status != 'unchanged':
+        raise RuntimeError('Log out of Plasma before accepting a KDE config proposal.')
+    proposed_hash = digest(candidate)
+    print(preview(home, proposal_id, allowed))
+    report = {'applied': [], 'unchanged': [], 'kept': []}
+    if ask('Accept this previewed proposal and back up the current file?', ['apply', 'keep'], 'keep') != 'apply':
+        report['kept'] = [proposal_id]
+        return report
+    # Check again after the confirmation in case the app rewrote its config.
+    entry, candidate, destination, status = inspect(home, proposal_id, allowed)
+    if status == 'stale':
+        raise RuntimeError('The target changed during review. The proposal and current file are preserved.')
+    if digest(candidate) != proposed_hash:
+        raise RuntimeError('The proposal changed during review. Review it again; both files are preserved.')
+    state = user_state(home)
+    timestamp = stamp()
+    if status != 'unchanged':
+        backup = state / 'backups' / timestamp / entry['target']
+        if destination.exists() or destination.is_symlink():
+            backup.parent.mkdir(parents=True, exist_ok=True)
+            shutil.copy2(destination, backup, follow_symlinks=False)
+        temporary = destination.with_name('.' + destination.name + '.fiw-proposal-' + timestamp)
+        shutil.copy2(candidate, temporary, follow_symlinks=False)
+        os.replace(temporary, destination)
+        report['applied'] = [entry['target']]
+    else:
+        report['unchanged'] = [entry['target']]
+    index_path = state / 'managed.json'
+    index = json.loads(index_path.read_text()) if index_path.is_file() else {}
+    if digest(destination) == entry.get('proposed_sha256'):
+        index[entry['target']] = digest(destination)
+    else:
+        # A manually edited proposal is a local preference on future updates.
+        index.pop(entry['target'], None)
+    temporary = index_path.with_name('.managed-proposal-' + timestamp)
+    temporary.write_text(json.dumps(index, indent=2) + '\n')
+    temporary.replace(index_path)
+    entries = registry(home)
+    entries.pop(proposal_id, None)
+    save(home, entries)
+    candidate.unlink()
+    report['backup'] = timestamp if (state / 'backups' / timestamp).exists() else None
+    return report

lib/rice.py

@@ -18,6 +18,7 @@ sys.path.insert(0, str(REPO / 'lib'))
 from capture import sections
 import backups
 import reporting
+import proposals
 from setup import (FLATPAKS, SERVICES, required_repositories,
                    existing_repository, repository_config, stage_repositories,
                    publish_repositories, install_flatpaks, enable_services)
@@ -228,7 +229,14 @@ def apply_configs(selection, home, update=False, conflict='ask'):
     index = json.loads(index_path.read_text()) if index_path.is_file() else {}
     stamp = datetime.now(timezone.utc).strftime('%Y%m%dT%H%M%S.%fZ')
     report = {'applied': [], 'unchanged': [], 'kept': [], 'review': [], 'missing': []}
-    for name, kind, src, relative in entries:
+    jobs = {}
+    for entry in entries:
+        name, kind, src, relative = entry
+        if relative in jobs and (kind not in ('kconfig', 'json') or jobs[relative][0][1] != kind):
+            raise RuntimeError('Conflicting config sources for ' + str(relative))
+        jobs.setdefault(relative, []).append(entry)
+    for relative, parts in jobs.items():
+        name, kind, src, _ = parts[-1]
         dest = home / relative
         # Keep writes inside the requested home, including through parent symlinks.
         if not dest.parent.resolve().is_relative_to(home):
@@ -248,7 +256,10 @@ def apply_configs(selection, home, update=False, conflict='ask'):
                 content = content.decode().replace('{{HOME}}', str(home)).encode()
             if kind in ('kconfig', 'json'):
                 old_text = dest.read_text() if dest.is_file() else ''
-                content = (merge_kconfig if kind == 'kconfig' else merge_json)(old_text, content.decode()).encode()
+                merge = merge_kconfig if kind == 'kconfig' else merge_json
+                for _, _, patch, _ in parts:
+                    old_text = merge(old_text, patch.read_text().replace('{{HOME}}', str(home)))
+                content = old_text.encode()
             new_hash = hashlib.sha256(content).hexdigest()
         key = str(relative)
         if old_hash == new_hash:
@@ -285,6 +296,8 @@ def apply_configs(selection, home, update=False, conflict='ask'):
         if target == dest:
             index[key] = new_hash
             report['applied'].append(key)
+        else:
+            proposals.record(home, target.relative_to(home), relative, old_hash, [part[0] for part in parts])
     state_dir.mkdir(parents=True, exist_ok=True)
     temporary = index_path.with_name('.managed-' + stamp)
     temporary.write_text(json.dumps(index, indent=2) + '\n')
@@ -597,10 +610,13 @@ def main():
     parser.add_argument('--list-backups', action='store_true')
     parser.add_argument('--backup-plan', metavar='ID')
     parser.add_argument('--restore-backup', metavar='ID')
+    parser.add_argument('--list-proposals', action='store_true')
+    parser.add_argument('--proposal-plan', metavar='ID')
+    parser.add_argument('--accept-proposal', metavar='ID')
     parser.add_argument('--summary', action='store_true')
     parser.add_argument('--run-id')
     parser.add_argument('--execution-error', help=argparse.SUPPRESS)
-    parser.add_argument('--workflow', choices=['restore', 'configs', 'packages', 'flatpaks', 'services', 'boot', 'backup'], default='restore')
+    parser.add_argument('--workflow', choices=['restore', 'configs', 'packages', 'flatpaks', 'services', 'boot', 'backup', 'proposal'], default='restore')
     parser.add_argument('--update', action='store_true')
     parser.add_argument('--conflict', choices=['ask', 'keep', 'apply'], default='ask')
     args = parser.parse_args()
@@ -613,6 +629,12 @@ def main():
     if args.run_id:
         reporting.validate_run(args.run_id)
     home = args.home.resolve()
+    if args.list_proposals:
+        print(json.dumps(proposals.list_proposals(home, backup_paths())))
+        return
+    if args.proposal_plan:
+        print(proposals.preview(home, args.proposal_plan, backup_paths()))
+        return
     if args.list_backups:
         print(json.dumps(backups.list_backups(home, backup_paths())))
         return
@@ -627,7 +649,7 @@ def main():
     action = ('configs' if args.apply_configs else 'packages' if args.install_packages else
               'flatpaks' if args.install_flatpaks else 'services-system' if args.enable_services and os.geteuid() == 0 else
               'services-user' if args.enable_services else 'boot' if args.deploy_bootloader else
-              'backup' if args.restore_backup else 'preflight' if args.check_configs and args.run_id else None)
+              'backup' if args.restore_backup else 'proposal' if args.accept_proposal else 'preflight' if args.check_configs and args.run_id else None)
     if action:
         run_id = args.run_id or datetime.now(timezone.utc).strftime('%Y%m%dT%H%M%S.%fZ')
         details = {}
@@ -647,6 +669,8 @@ def main():
                 details = deploy(selection['bootloader'], args.esp, ask)
             elif action == 'backup':
                 details = backups.restore(home, args.restore_backup, backup_paths(), ask, active_plasma, args.conflict)
+            elif action == 'proposal':
+                details = proposals.accept(home, args.accept_proposal, backup_paths(), ask, active_plasma)
             else:
                 check_configs(selection, home)
                 print('Config restoration preflight passed.')

tests/test_proposals.py

@@ -0,0 +1,131 @@
+import importlib.util
+import json
+import tempfile
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+
+spec = importlib.util.spec_from_file_location('rice', Path(__file__).resolve().parents[1] / 'lib/rice.py')
+rice = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(rice)
+
+
+class ProposalTests(unittest.TestCase):
+    def create(self, home):
+        selection = rice.load_selection()
+        selection.update(groups=[], configs=['fastfetch'])
+        rice.apply_configs(selection, home, conflict='apply')
+        target = home / '.config/fastfetch/config.jsonc'
+        target.write_text('local preferences\n')
+        rice.apply_configs(selection, home, update=True, conflict='apply')
+        candidate = Path(str(target) + '.new')
+        return selection, target, candidate, candidate.relative_to(home).as_posix()
+
+    def test_accept_backs_up_local_file_and_keeps_other_proposals(self):
+        with tempfile.TemporaryDirectory() as temp, patch.object(rice.proposals.os, 'geteuid', return_value=1000):
+            home = Path(temp)
+            selection, target, candidate, proposal_id = self.create(home)
+            proposed = candidate.read_bytes()
+            rice.apply_configs(selection, home, update=True, conflict='apply')
+            pending = rice.proposals.list_proposals(home, rice.backup_paths())
+            self.assertEqual(len(pending), 2)
+            self.assertIn('-local preferences', rice.proposals.preview(home, proposal_id, rice.backup_paths()))
+            report = rice.proposals.accept(home, proposal_id, rice.backup_paths(), lambda *args: 'apply', lambda *args: False)
+            self.assertEqual(target.read_bytes(), proposed)
+            backup = rice.backups.user_state(home) / 'backups' / report['backup'] / '.config/fastfetch/config.jsonc'
+            self.assertEqual(backup.read_text(), 'local preferences\n')
+            self.assertFalse(candidate.exists())
+            pending = rice.proposals.list_proposals(home, rice.backup_paths())
+            self.assertEqual(len(pending), 1)
+            self.assertEqual(pending[0]['status'], 'unchanged')
+            index = json.loads((rice.backups.user_state(home) / 'managed.json').read_text())
+            self.assertEqual(index['.config/fastfetch/config.jsonc'], rice.digest(target))
+
+    def test_keep_and_stale_targets_preserve_both_files(self):
+        with tempfile.TemporaryDirectory() as temp, patch.object(rice.proposals.os, 'geteuid', return_value=1000):
+            home = Path(temp)
+            _, target, candidate, proposal_id = self.create(home)
+            original_proposal = candidate.read_bytes()
+            rice.proposals.accept(home, proposal_id, rice.backup_paths(), lambda *args: 'keep', lambda *args: False)
+            self.assertEqual(target.read_text(), 'local preferences\n')
+            self.assertEqual(candidate.read_bytes(), original_proposal)
+            target.write_text('newer local preferences\n')
+            with self.assertRaisesRegex(RuntimeError, 'changed since'):
+                rice.proposals.accept(home, proposal_id, rice.backup_paths(), lambda *args: 'apply', lambda *args: False)
+            self.assertEqual(target.read_text(), 'newer local preferences\n')
+            self.assertEqual(candidate.read_bytes(), original_proposal)
+
+    def test_target_change_during_confirmation_is_rejected(self):
+        with tempfile.TemporaryDirectory() as temp, patch.object(rice.proposals.os, 'geteuid', return_value=1000):
+            home = Path(temp)
+            _, target, candidate, proposal_id = self.create(home)
+            def confirm(*args):
+                target.write_text('app rewrote its config\n')
+                return 'apply'
+            with self.assertRaisesRegex(RuntimeError, 'changed during'):
+                rice.proposals.accept(home, proposal_id, rice.backup_paths(), confirm, lambda *args: False)
+            self.assertEqual(target.read_text(), 'app rewrote its config\n')
+            self.assertTrue(candidate.is_file())
+
+    def test_manually_edited_proposal_remains_local_on_future_updates(self):
+        with tempfile.TemporaryDirectory() as temp, patch.object(rice.proposals.os, 'geteuid', return_value=1000):
+            home = Path(temp)
+            selection, target, candidate, proposal_id = self.create(home)
+            candidate.write_text('chosen custom config\n')
+            rice.proposals.accept(home, proposal_id, rice.backup_paths(), lambda *args: 'apply', lambda *args: False)
+            rice.apply_configs(selection, home, update=True, conflict='apply')
+            self.assertEqual(target.read_text(), 'chosen custom config\n')
+            self.assertTrue(candidate.is_file())
+
+    def test_proposal_change_during_confirmation_requires_another_review(self):
+        with tempfile.TemporaryDirectory() as temp, patch.object(rice.proposals.os, 'geteuid', return_value=1000):
+            home = Path(temp)
+            _, target, candidate, proposal_id = self.create(home)
+            def confirm(*args):
+                candidate.write_text('edited proposal during review\n')
+                return 'apply'
+            with self.assertRaisesRegex(RuntimeError, 'proposal changed during'):
+                rice.proposals.accept(home, proposal_id, rice.backup_paths(), confirm, lambda *args: False)
+            self.assertEqual(target.read_text(), 'local preferences\n')
+            self.assertEqual(candidate.read_text(), 'edited proposal during review\n')
+
+    def test_paths_outside_home_and_live_kde_are_rejected(self):
+        with tempfile.TemporaryDirectory() as temp, patch.object(rice.proposals.os, 'geteuid', return_value=1000):
+            root = Path(temp); home = root / 'home'; home.mkdir()
+            outside = root / 'outside'; outside.mkdir()
+            _, target, candidate, proposal_id = self.create(home)
+            config = home / '.config'
+            config.rename(home / 'saved-config')
+            config.symlink_to(outside, target_is_directory=True)
+            with self.assertRaisesRegex(RuntimeError, 'Unsafe'):
+                rice.proposals.list_proposals(home, rice.backup_paths())
+            config.unlink(); (home / 'saved-config').rename(config)
+            allowed = rice.backup_paths()
+            allowed['.config/fastfetch/config.jsonc']['kde'] = True
+            with self.assertRaisesRegex(RuntimeError, 'Log out'):
+                rice.proposals.accept(home, proposal_id, allowed, lambda *args: 'apply', lambda *args: True)
+            self.assertEqual(target.read_text(), 'local preferences\n')
+            self.assertTrue(candidate.is_file())
+
+    def test_shared_kconfig_generates_one_complete_proposal(self):
+        with tempfile.TemporaryDirectory() as temp:
+            root = Path(temp); home = root / 'home'; home.mkdir()
+            relative = Path('.config/kwinrc')
+            target = home / relative; target.parent.mkdir()
+            target.write_text('[Appearance]\ncolour=orange\n[Desktops]\nNumber=4\n[Other]\nkeep=yes\n')
+            style, shortcuts = root / 'style', root / 'shortcuts'
+            style.write_text('[Appearance]\ncolour=purple\n')
+            shortcuts.write_text('[Desktops]\nNumber=1\n')
+            entries = [('kde-style', 'kconfig', style, relative), ('kde-shortcuts', 'kconfig', shortcuts, relative)]
+            with patch.object(rice, 'config_entries', return_value=entries):
+                rice.apply_configs(rice.load_selection(), home, update=True, conflict='apply')
+            choices = rice.proposals.list_proposals(home, rice.backup_paths())
+            self.assertEqual(len(choices), 1)
+            content = (home / choices[0]['id']).read_text()
+            for value in ('colour=purple', 'Number=1', 'keep=yes'):
+                self.assertIn(value, content)
+            self.assertIn('colour=orange', target.read_text())
+
+
+if __name__ == '__main__':
+    unittest.main()