build: set ELECTRUM_ECC_DONT_COMPILE=1, instead manually build lib

Haven't checked if electrum-ecc compiles libsecp reproducibly.
For now let's just keep the old flow.
(but if we spent time on making that compilation reproducible,
the appimage and the macos builds could use it directly)

contrib/build-linux/appimage/make_appimage.sh

@@ -161,6 +161,7 @@ info "Installing build dependencies."
     --cache-dir "$PIP_CACHE_DIR" -r "$CONTRIB/deterministic-build/requirements-build-appimage.txt"
 
 info "installing electrum and its dependencies."
+export ELECTRUM_ECC_DONT_COMPILE=1
 "$python" -m pip install --no-build-isolation --no-dependencies --no-binary :all: --no-warn-script-location \
     --cache-dir "$PIP_CACHE_DIR" -r "$CONTRIB/deterministic-build/requirements.txt"
 "$python" -m pip install --no-build-isolation --no-dependencies --no-binary :all: --only-binary PyQt6,PyQt6-Qt6,cryptography --no-warn-script-location \

contrib/build-wine/build-electrum-git.sh

@@ -32,6 +32,7 @@ export AIOHTTP_NO_EXTENSIONS=1
 export YARL_NO_EXTENSIONS=1
 export MULTIDICT_NO_EXTENSIONS=1
 export FROZENLIST_NO_EXTENSIONS=1
+export ELECTRUM_ECC_DONT_COMPILE=1
 
 info "Installing requirements..."
 $WINE_PYTHON -m pip install --no-build-isolation --no-dependencies --no-binary :all: --no-warn-script-location \

contrib/make_packages.sh

@@ -32,6 +32,8 @@ export YARL_NO_EXTENSIONS=1
 export MULTIDICT_NO_EXTENSIONS=1
 export FROZENLIST_NO_EXTENSIONS=1
 
+export ELECTRUM_ECC_DONT_COMPILE=1
+
 # if we end up having to compile something, at least give reproducibility a fighting chance
 export LC_ALL=C
 export TZ=UTC

contrib/osx/make_osx.sh

@@ -169,6 +169,7 @@ cp -f "$DLL_TARGET_DIR/libusb-1.0.dylib" "$PROJECT_ROOT/electrum/" || fail "Coul
 
 
 info "Installing requirements..."
+export ELECTRUM_ECC_DONT_COMPILE=1
 python3 -m pip install --no-build-isolation --no-dependencies --no-binary :all: \
     --no-warn-script-location \
     -Ir ./contrib/deterministic-build/requirements.txt \