mpd2020.xlsx: record the repoint (hold until the lecture PRs merge)

CATALOG.md

@@ -6,7 +6,7 @@
 
 The dataset registry, **auto-generated** from the sidecar manifests (`lectures/*.yml`). Do not edit by hand — run `python scripts/build_catalog.py`. A dataset appears here once it has a manifest, which may be before its consuming lectures are repointed — an empty **Used by** column means the file is here and documented but no lecture reads it from this repo yet. Files still to migrate are tracked in [PLAN.md](PLAN.md).
 
-**18 datasets** · 10 read by lectures today, 8 awaiting repoint · 5.3 MB total · 17 permitted / 1 restricted redistribution
+**18 datasets** · 11 read by lectures today, 7 awaiting repoint · 5.3 MB total · 17 permitted / 1 restricted redistribution
 
 | Dataset | Class | Source | Licence | Redist. | Integrity | Builder | Size | Used by |
 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
@@ -24,7 +24,7 @@ The dataset registry, **auto-generated** from the sidecar manifests (`lectures/*
 | [**japan_population_by_age.csv**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/japan_population_by_age.csv)<br><sub>Japan — population by single year of age, 2024</sub> | constructed | [Population Estimates, Statistics Bureau of Japan, Ministry of Internal Affairs and Communications](https://www.stat.go.jp/english/data/jinsui/index.html) | Japan Statistics Bureau terms of use | ✅ permitted | ✅ verified | ✅ committed | 1.3 KB | [lecture-python-intro · prob_dist.md](https://github.com/QuantEcon/lecture-python-intro/blob/main/lectures/prob_dist.md) |
 | [**lingcod_msy_recovery.csv**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/lingcod_msy_recovery.csv)<br><sub>Pacific Coast lingcod — biomass and fishing pressure relative to MSY</sub> | constructed | [RAM Legacy Stock Assessment Database](https://www.ramlegacy.org/) | CC BY 4.0 | ✅ permitted | ⚠️ unverifiable | ⚠️ unrecovered | 2.3 KB | [lecture-python-intro · msy_fishery.md](https://github.com/QuantEcon/lecture-python-intro/blob/main/lectures/msy_fishery.md) |
 | [**longprices.xls**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/longprices.xls)<br><sub>Price levels in four hard-currency countries, 1600-2000</sub> | verbatim | [Sargent and Velde, "The Big Problem of Small Change" — supporting data](https://press.princeton.edu/books/hardcover/9780691116358/the-big-problem-of-small-change) |  | ✅ permitted | ⚠️ unverifiable | n/a (verbatim) | 379.5 KB | — |
-| [**mpd2020.xlsx**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/mpd2020.xlsx)<br><sub>Maddison Project Database 2020 — GDP per capita and population, 1 CE to 2018</sub> | constructed | [Maddison Project Database, version 2020](https://www.rug.nl/ggdc/historicaldevelopment/maddison/releases/maddison-project-database-2020) | CC BY 4.0 | ✅ permitted | ⇄ diverged | ⚠️ unrecovered | 1.7 MB | — |
+| [**mpd2020.xlsx**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/mpd2020.xlsx)<br><sub>Maddison Project Database 2020 — GDP per capita and population, 1 CE to 2018</sub> | constructed | [Maddison Project Database, version 2020](https://www.rug.nl/ggdc/historicaldevelopment/maddison/releases/maddison-project-database-2020) | CC BY 4.0 | ✅ permitted | ⇄ diverged | ⚠️ unrecovered | 1.7 MB | [lecture-python-intro · long_run_growth.md](https://github.com/QuantEcon/lecture-python-intro/blob/main/lectures/long_run_growth.md)<br>[lecture-wasm · long_run_growth.md](https://github.com/QuantEcon/lecture-wasm/blob/main/lectures/long_run_growth.md) |
 | [**nom_balances.npy**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/nom_balances.npy)<br><sub>French Revolution — monthly nominal assignat balances, 1789-1796</sub> | constructed | unrecorded |  | ✅ permitted | ⚠️ unverifiable | ⚠️ unrecovered | 1.4 KB | — |
 | [**realwage.csv**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/realwage.csv)<br><sub>OECD real minimum wages — 32 countries, 2006–2016</sub> | constructed | [OECD — Real minimum wages (RMW)](https://stats.oecd.org/Index.aspx?DataSetCode=RMW) | CC BY 4.0 | ✅ permitted | ⚠️ unverifiable | ⚠️ unrecovered | 118.7 KB | [lecture-python-programming · pandas_panel.md](https://github.com/QuantEcon/lecture-python-programming/blob/main/lectures/pandas_panel.md)<br>[lecture-python.myst · pandas_panel.md](https://github.com/QuantEcon/lecture-python.myst/blob/main/lectures/pandas_panel.md) |
 | [**us_adult_heights.csv**](https://github.com/QuantEcon/data-lectures/raw/main/lectures/us_adult_heights.csv)<br><sub>United States — adult standing height by sex, NHANES 2015-2018</sub> | constructed | [National Health and Nutrition Examination Survey (NHANES), US Centers for Disease Control and Prevention, National Center for Health Statistics](https://www.cdc.gov/nchs/nhanes/index.htm) | US Government work — public domain | ✅ permitted | ✅ verified | ✅ committed | 123.1 KB | [lecture-python-intro · prob_dist.md](https://github.com/QuantEcon/lecture-python-intro/blob/main/lectures/prob_dist.md)<br>[lecture-python-intro · observed_distributions.md](https://github.com/QuantEcon/lecture-python-intro/blob/main/lectures/observed_distributions.md)<br>[lecture-python-intro · fitting_distributions.md](https://github.com/QuantEcon/lecture-python-intro/blob/main/lectures/fitting_distributions.md) |

lectures/assignat.xlsx.yml

@@ -103,7 +103,11 @@ schema:
   row_count_floor: null           # per-range, declared above
   known_nulls: {}
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 builder: null
 builder_status: not-applicable    # verbatim republication -- nothing to build

lectures/caron.npy.yml

@@ -90,7 +90,11 @@ schema:
     of this array with rows 14:77 of nom_balances.npy. Changing the length of
     either silently misaligns the other.
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 # ---------------------------------------------------------------------------
 # Builder

lectures/chapter_3.xlsx.yml

@@ -90,7 +90,11 @@ schema:
     map to strip whitespace and handle footnote markers), so dtypes are not
     stable across sheets and are deliberately not asserted here.
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 # ---------------------------------------------------------------------------
 # Builder

lectures/dette.xlsx.yml

@@ -108,7 +108,11 @@ schema:
     sparse layouts in a working spreadsheet, and the lecture indexes specific
     columns out of them rather than consuming the block whole.
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 builder: null
 builder_status: not-applicable    # verbatim republication -- nothing to build

lectures/fig_3.xlsx.yml

@@ -83,7 +83,11 @@ schema:
   row_count_floor: 30             # exact by design -- a frozen 30-row block
   known_nulls: {}                 # declared per column above
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 builder: null
 builder_status: not-applicable    # verbatim republication -- nothing to build

lectures/longprices.xls.yml

@@ -88,7 +88,11 @@ schema:
   row_count_floor: 401            # frozen historical extract: exact by design
   known_nulls: {}                 # declared per sheet above
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 builder: null
 builder_status: not-applicable    # verbatim republication -- nothing to build

lectures/mpd2020.xlsx.yml

@@ -132,12 +132,18 @@ schema:
   known_nulls: {}                 # declared per sheet above
 
 # ---------------------------------------------------------------------------
-# Consumers
+# Consumers -- how a correction knows what to rebuild
 # ---------------------------------------------------------------------------
-# Empty until the Track A repoint lands. lecture-python-intro and lecture-wasm
-# both read this file today, but from intro's own copy, not from here.
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
 
-consumers: []
+consumers:
+  - repo: QuantEcon/lecture-python-intro
+    file: lectures/long_run_growth.md
+  - repo: QuantEcon/lecture-wasm
+    file: lectures/long_run_growth.md
 
 # ---------------------------------------------------------------------------
 # Builder

lectures/nom_balances.npy.yml

@@ -85,7 +85,11 @@ schema:
     (late 1789 through 1790) exist to extend the circulation series before the
     price series begins, and must not be trimmed.
 
-consumers: []                     # empty until the Track A repoint lands
+# Every lecture that reads this file FROM THIS REPO. Empty does not mean the
+# file is unused -- it may still be consumed from a lecture repo's own copy,
+# which is exactly what a repoint moves. Populated in the repoint PR, at the
+# same time migration.yml flips to `repointed` (PLAN, "Repoint rules").
+consumers: []
 
 # ---------------------------------------------------------------------------
 # Builder

migration.yml

@@ -182,12 +182,20 @@ datasets:
 
   mpd2020.xlsx:
     pilot: A1
-    status: landed
+    status: repointed
     prior_pattern: own-repo
     landed:
       pr: QuantEcon/data-lectures#5
       date: 2025-02-14
-    repoints: []
+    # Two consuming repos, moved together: intro's copy could not be deleted
+    # while wasm fetched that exact blob by URL (PLAN, "Repoint rules" 1).
+    repoints:
+      - repo: QuantEcon/lecture-python-intro
+        pr: QuantEcon/lecture-python-intro#823
+        date: 2026-08-06
+      - repo: QuantEcon/lecture-wasm
+        pr: QuantEcon/lecture-wasm#52
+        date: 2026-08-06
     cutover: null
 
   longprices.xls: