follow-up prev

there must be a better way of doing this...
we should somehow automate figuring out the build-time dependencies of requirements.txt

contrib/deterministic-build/requirements-build-makepackages.txt

@@ -1,9 +1,18 @@
+flit-core==3.6.0 \
+    --hash=sha256:5892962ab8b8ea945835b3a288fe9dd69316f1903d5288c3f5cafdcdd04756ad \
+    --hash=sha256:7661029dedadd456c1d94e0a4765222447f00808bb1fcc767e4270a883ba8b4c
+importlib-metadata==1.7.0 \
+    --hash=sha256:90bb658cdbbf6d1735b6341ce708fc7024a3e14e99ffdc5783edea9f9b077f83 \
+    --hash=sha256:dc15b2969b4ce36305c51eebe62d418ac7791e9a157911d58bfb1f9ccd8e2070
 packaging==21.3 \
     --hash=sha256:dd47c42927d89ab911e606518907cc2d3a1f38bbd026385970643f9c5b8ecfeb \
     --hash=sha256:ef103e05f519cdc783ae24ea4e2e0f508a9c99b2d4969652eed6a2e1ea5bd522
 pip==21.3.1 \
     --hash=sha256:deaf32dcd9ab821e359cd8330786bcd077604b5c5730c0b096eda46f95c24a2d \
     --hash=sha256:fd11ba3d0fdb4c07fbc5ecbba0b1b719809420f25038f8ee3cd913d3faa3033a
+poetry-core==1.0.7 \
+    --hash=sha256:4f8a7f5390d772f42c4c4c3f188e6424b802cb4b57466c6633a1b9ac36f18a43 \
+    --hash=sha256:98c11c755a16ef6c5673c22ca94a3802a7df4746a0853a70b6fae8b9f5cac206
 pyparsing==3.0.7 \
     --hash=sha256:18ee9022775d270c55187733956460083db60b37d0d0fb357445f3094eed3eea \
     --hash=sha256:a6c06a88f252e6c322f65faf8f418b16213b51bdfaece0524c1c1bc30c63c484
@@ -18,4 +27,7 @@ tomli==1.2.3 \
     --hash=sha256:e3069e4be3ead9668e21cb9b074cd948f7b3113fd9c8bba083f48247aab8b11c
 wheel==0.37.1 \
     --hash=sha256:4bdcd7d840138086126cd09254dc6195fb4fc6f01c050a1d7236f2630db1d22a \
-    --hash=sha256:e9a504e793efbca1b8e0e9cb979a249cf4a0a7b5b8c9e8b65a5e39d49529c1c4
+    --hash=sha256:e9a504e793efbca1b8e0e9cb979a249cf4a0a7b5b8c9e8b65a5e39d49529c1c4
+zipp==3.6.0 \
+    --hash=sha256:71c644c5369f4a6e07636f0aa966270449561fcea2e3d6747b8d23efaa9d7832 \
+    --hash=sha256:9fe5ea21568a0a70e50f273397638d39b03353731e6cbbb3fd8502a33fec40bc

contrib/requirements/requirements-build-makepackages.txt

@@ -12,3 +12,11 @@ wheel
 # importlib_metadata also needs:
 # https://github.com/python/importlib_metadata/blob/1e2381fe101fd70742a0171e51c1be82aedf519b/pyproject.toml#L2
 setuptools_scm[toml]>=3.4.1
+
+# dnspython also needs:
+# https://github.com/rthalley/dnspython/blob/1a7c14fb6c200be02ef5c2f3bb9fd84b85004459/pyproject.toml#L64
+poetry-core
+
+# typing-extensions also needs:
+# https://github.com/python/typing/blob/a2371460d184c96aab7a69acc47fd059f875e3b4/typing_extensions/pyproject.toml#L3
+flit_core>=3.4,<4