Build system that downloads stuff from network is bad. Build system that
does so unconditionally is twice as bad.

Required files are downloaded as separate fixed-output derivations and
put into correct location before build phase starts.

--- laminar-1.1/CMakeLists.txt
+++ laminar-1.1-new/CMakeLists.txt
@@ -82,13 +82,6 @@
     COMMAND sh -c '( echo -n "\\#define INDEX_HTML_UNCOMPRESSED_SIZE " && wc -c < "${CMAKE_SOURCE_DIR}/src/resources/index.html" ) > index_html_size.h'
     DEPENDS src/resources/index.html)
 
-# Download 3rd-party frontend JS libs...
-file(DOWNLOAD https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.12/vue.min.js
-	js/vue.min.js EXPECTED_MD5 fb192338844efe86ec759a40152fcb8e)
-file(DOWNLOAD https://raw.githubusercontent.com/drudru/ansi_up/v4.0.4/ansi_up.js
-        js/ansi_up.js EXPECTED_MD5 b31968e1a8fed0fa82305e978161f7f5)
-file(DOWNLOAD https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.min.js
-        js/Chart.min.js EXPECTED_MD5 f6c8efa65711e0cbbc99ba72997ecd0e)
 # ...and compile them
 generate_compressed_bins(${CMAKE_BINARY_DIR} js/vue.min.js
     js/ansi_up.js js/Chart.min.js)
@@ -139,12 +132,12 @@
     target_link_libraries(laminar-tests ${GTEST_LIBRARY} capnp-rpc capnp kj-http kj-async kj pthread sqlite3 z)
 endif()
 
-set(SYSTEMD_UNITDIR /lib/systemd/system CACHE PATH "Path to systemd unit files")
-set(BASH_COMPLETIONS_DIR /usr/share/bash-completion/completions CACHE PATH "Path to bash completions directory")
-set(ZSH_COMPLETIONS_DIR /usr/share/zsh/site-functions CACHE PATH "Path to zsh completions directory")
+set(SYSTEMD_UNITDIR lib/systemd/system CACHE PATH "Path to systemd unit files")
+set(BASH_COMPLETIONS_DIR usr/share/bash-completion/completions CACHE PATH "Path to bash completions directory")
+set(ZSH_COMPLETIONS_DIR usr/share/zsh/site-functions CACHE PATH "Path to zsh completions directory")
 install(TARGETS laminard RUNTIME DESTINATION sbin)
 install(TARGETS laminarc RUNTIME DESTINATION bin)
-install(FILES etc/laminar.conf DESTINATION /etc)
+install(FILES etc/laminar.conf DESTINATION etc)
 install(FILES etc/laminarc-completion.bash DESTINATION ${BASH_COMPLETIONS_DIR} RENAME laminarc)
 install(FILES etc/laminarc-completion.zsh DESTINATION ${ZSH_COMPLETIONS_DIR} RENAME _laminarc)